base
Old Frenchbottom, foundation, the lowest supporting part
About This Root
base means the bottom — the part everything else rests on. It comes from Greek básis ('a step, a pedestal, that on which one stands'), which passed through Latin basis and Old French base into English. The image is literal: the base of a column, a lamp, a triangle, a mountain — the foundation that holds the rest up.
From that foundation idea English built a small, very transparent family, mostly through compounding:
- base + ball → baseball: a game organized around fixed bases you must touch.
- base + -ment (a place/result) → basement: the level below the base of a building, underground.
- de- (down) + base → debase: to bring something down from its proper level — to lower its quality, value, or dignity. Originally used of coins: to debase a currency was to mix in cheaper metal.
- base + -d → based: built on a foundation, used everywhere — home-based, evidence-based, standards-based.
Notice that base works less like a classical root buried inside long Latin words and more like an ordinary English word that joins onto others. Most base-words are see-through: the meaning is just 'foundation' plus whatever it attaches to.
One honest warning about a lookalike. The adjective base meaning 'low, mean, contemptible' ('base motives,' 'base metal') is a DIFFERENT word — it comes from Late Latin bassus, 'low, short,' the same source as bass (low sound) and the surname-like 'basement' relatives in Romance languages. It happens to share spelling with foundation-base, and the senses brush against each other (both involve 'low'), but they are separate origins. Keep them apart: the noun base = foundation (Greek básis); the adjective base = morally low (Latin bassus).
base = the bottom that holds everything up: the base of a column, the bases in baseball, a basement under the base of a house. To debase is to drag something down below that base.
Core Words Deep Dive
The few words from this family worth telling in full — one by one.
The hub word. As a noun it is the bottom or foundation (the base of a lamp, a military base, a customer base); as a verb, to base something on X is to rest it on that foundation. Keep it apart from the unrelated adjective base ('low, contemptible'), which comes from a different Latin word.
de- (down) + base = to drag something below its proper level. First used of money — to debase a coin was to mix in cheap metal so it was worth less. The image generalized: you can debase a currency, a language, or your own dignity, all by lowering it from where it should be.
base + -ment = the level at (and below) the base of a building. A transparent compound, but a useful reminder that base is literally 'the bottom' — the basement is the floor sitting under the building's foundation line.
Related Roots
base and bas are the same Greek básis ('step, pedestal') arriving by two routes: bas/basi shows up in scholarly compounds (basis, basic, basilica), while base is the French-smoothed everyday form (baseball, basement). Same foundation idea, different dress.
Both mean 'foundation,' but base (Greek) is the physical bottom you can point at — the base of a wall. fund (Latin fundus, 'bottom') is more abstract — fundamental, foundation, profound. Concrete bottom → base; underlying principle → fund.
Associated Words · 5
base
To give as its foundation or starting point; to lay the foundation of; Something from which other things extend; a foundation; Low in height; short
baseball
A popular team sport played with a bat and ball; the ball used in this sport
basement
The floor of a building below ground level
debase
To lower the quality, value, or character of something
standards-based
Designed or operating according to established official standards; 基于标准的