
Some words carry a whole worldview inside them. Philotimo, meraki, hiraeth and petrichor are a few of the most loved examples: each names something people feel or notice but rarely have a single word for. This list gathers 21 of them, mostly from Greek, with others from Welsh, Hopi and Sanskrit, and explains what each really means, where it comes from and how it is used today.
Ethnologue, the best-known catalogue of the world's languages, counts a little over 7,000 living languages, many of them spoken by small communities. Every one of them holds ideas that do not translate neatly, which is exactly why words like these travel. Several entries below are also corrected versions of popular internet definitions that drift from the original sense. Hypnagogia, for instance, is about falling asleep rather than waking up, and ataraxia is a calm state of mind rather than a rejection of faith.
The words are grouped by theme: Greek words about character, Greek words about the world and the cosmos, words from myth and sacred tradition, and words for memory, imagination and the senses.
Greek words about character and feeling
1) Philotimo (φιλότιμο)
Literally "love of honour," philotimo is often called the untranslatable Greek virtue. In modern use it means meeting your duties to family and community with dignity, doing the right thing without being asked, and repaying kindness generously. Plato could use the word ironically for someone greedy for status, but over the centuries it took on its warm, noble sense; Saint Paisios of Mount Athos described it as a humble goodness free of self-interest.
2) Filoxenia (φιλοξενία)
Filoxenia combines philos (friend, lover) and xenos (stranger, guest), so it means "love of strangers." It goes beyond politeness to a joyful generosity toward visitors. The idea is ancient: in Homer's world, the custom of xenia bound hosts and guests to mutual respect, and Zeus himself was honoured as protector of travellers.
3) Meraki (μεράκι)
Greeks use meraki for doing something with soul, creativity or love, putting a piece of yourself into the work, whether it is cooking a meal or restoring a boat. The word is generally traced to the Turkish merak, meaning a passion or keen interest, and it has become a favourite name for cafés and craft studios worldwide.
4) Nostalgia
Nostalgia joins the Greek nóstos (homecoming) and álgos (pain). It is not an ancient word: Johannes Hofer, a medical student in Basel, coined it in 1688 to describe the dangerous homesickness of Swiss mercenaries serving abroad. Once treated as a disease, it is now studied as a common, often positive emotion that can lift mood and strengthen a sense of connection.
5) Ataraxia (ἀταραξία)
Ataraxia means "untroubledness," from a negative prefix and the verb tarassein, to disturb. For the Epicureans it was a central part of the good life, a lasting peace of mind reached partly by losing the fear of death and of angry gods. The Pyrrhonist sceptics sought it by suspending judgement on questions that cannot be settled.
Greek words for the world and the cosmos
6) Acropolis
From akros (highest) and polis (city), an acropolis is a fortified high point within or above a city, chosen because steep sides made it easy to defend. The Acropolis of Athens, crowned by the Parthenon, is the famous one, but many Greek cities had their own, such as the Acrocorinth above Corinth and the cliff-top citadel of Lindos on Rhodes.
7) Genesis
Genesis is Greek for origin, birth or coming into being. It is the name the Greek translation of the Bible gave to its first book, which tells of the creation of the world, and English still uses it for the beginning of almost anything, from a project to an idea.
8) Chthonic
Chthonic comes from khthōn, earth, and means "of or beneath the earth." In Greek religion, chthonic deities such as Hades, Persephone and Hecate belonged to the underworld and were honoured with different rites from the sky gods of Olympus. Writers today use the word for anything dark, deep and primal.
9) Empyrean
The empyrean, from a Greek word meaning "in fire," was the highest heaven in ancient and medieval cosmology, a realm of pure light beyond the moving spheres. In Dante's Paradiso it is the dwelling place of God, the angels and the blessed. As an adjective, it now simply means heavenly or sublime.
10) Psychopomp
A psychopomp, from psychē (soul) and pompos (guide), is a figure who escorts the souls of the dead to the afterlife. Hermes did this in Greek myth, and other cultures have their own guides, including the Egyptian jackal-headed Anubis. Psychologists in the tradition of Carl Jung borrowed the term for inner figures that guide a person through change.
Words from myth and sacred tradition
11) Mythopoeic
Mythopoeic means myth-making or giving rise to myths. J. R. R. Tolkien popularised the related noun in "Mythopoeia," a poem he wrote for his friend C. S. Lewis, and the word is now used for fantasy fiction that builds a complete mythology, as Tolkien's Middle-earth does.
12) Hieros gamos
Hieros gamos is Greek for "sacred marriage." It describes the union of a god and goddess, such as Zeus and Hera, and also rituals in which that union was re-enacted, as in ancient Mesopotamian ceremonies linked to the goddess Inanna. The idea symbolised fertility and the renewal of the land.
13) Sipapu
Sipapu is a Hopi word for a small hole in the floor of a kiva, the ceremonial chamber of Pueblo peoples. It represents the opening through which, in Hopi and related traditions, the first people emerged into this world. Hopi tradition places the original sipapu in the Grand Canyon.
14) Oneiromancy
Oneiromancy, from oneiros (dream) and manteia (divination), is the practice of predicting the future from dreams. It was taken seriously across the ancient world; the most famous surviving manual is the Oneirocritica, written by Artemidorus in the 2nd century AD.
15) Yonic
Yonic describes a symbol based on the yoni, a Sanskrit word for womb or source. In Hinduism the yoni represents the creative, life-giving power of the goddess Shakti and is often depicted together with the lingam of Shiva, the two together standing for the union of complementary forces.
16) Sambhogakaya
Sambhogakaya is a Sanskrit term from Mahayana Buddhism, usually translated "enjoyment body." It is one of the three bodies of a Buddha: the absolute truth body, the physical body seen on earth, and between them this radiant, visionary form in which celestial Buddhas such as Amitabha and great bodhisattvas such as Avalokiteshvara appear to advanced practitioners.
Words for memory, imagination and the senses
17) Hiraeth

Hiraeth is a Welsh word, built from hir (long) and an abstract-noun ending, for a deep longing for home, especially for Wales. Its earliest uses in Welsh poetry carry grief for someone lost. It is often described as homesickness for a home that may no longer exist or never quite did, and it is often compared with the Portuguese saudade.
18) Paracosm
A paracosm is a detailed imaginary world, usually invented in childhood, with its own geography, history and sometimes language. The term was coined by Ben Vincent, a participant in a 1976 study by researcher Robert Silvey. The best-known paracosms belong to the Brontë siblings, whose kingdoms of Angria and Gondal are often seen as a training ground for their later novels.
19) Petrichor
Petrichor is the earthy smell after rain falls on dry ground. Australian scientists Isabel Joy Bear and Richard Thomas coined it in a 1964 paper in Nature, from petra (stone) and ichor, the fluid said to flow in the veins of the gods. The scent comes partly from plant oils stored in dry soil and partly from geosmin, produced by soil bacteria, which humans can smell at tiny concentrations.
20) Palimpsest
A palimpsest, from Greek for "scraped again," is a manuscript page that was scraped or washed clean and written over, often because parchment was expensive. Faint traces of the older text can sometimes be recovered; the Archimedes Palimpsest hid lost works of the Greek mathematician under a prayer book. The word now describes any place or thing that shows layers of its past.
21) Hypnagogia
Hypnagogia is the drowsy, in-between state as you fall asleep, when images, sounds or the sudden feeling of falling can appear. French scholar Alfred Maury introduced the term "hypnagogic" in 1848; the reverse transition, from sleep to waking, is called hypnopompia. Many artists and inventors have tried to catch ideas in this half-dreaming moment.
Making these words your own
Most of these words are rare in everyday English, but none of them is obscure for its own sake. Each names something real: the pride of a good host, the smell of a summer storm, the pull of a place you have lost. Using one well is a small act of precision.
A simple way to remember them is to attach each to a moment from your own life: the next time rain hits a dry pavement, call it petrichor; the next time you put your whole heart into a task, that is meraki. Words learned through experience tend to stay.
Sources: Wikipedia: Philotimo; Wikipedia: Nostalgia; Wikipedia: Ataraxia; Wikipedia: Sipapu; Wikipedia: Hiraeth; Wikipedia: Paracosm; Wikipedia: Petrichor; Wikipedia: Hypnagogia. Word cards: hiraeth card by LaWhimsy (Word Nerd series); meraki card creator unknown.
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