lev

The root lev grows from one physical sensation the Romans knew well: weight, and the act of taking it away.

The Latin verb levāre meant "to lift, to raise" — to take something heavy and bring it up. Its sibling adjective levis meant "light" — not heavy, easy to carry. These two ideas are really one idea seen from opposite ends: you lift what is light, and lifting makes a load feel lighter. Almost every lev word lives somewhere on that line between "raise up" and "make lighter."

Start with the literal lifting. Add the prefix e- (out, up) to levāre and you get elevate — to raise something up and out. The machine that does this for you is the elevator, and the height you reach is elevation. The simplest lifting tool is the lever — a bar you push down on one end to raise a weight on the other. The power that gives you is leverage: a small effort moving a large load.

Now follow the lightness branch. To relieve is re- + levāre — to lift a weight off someone again, to take the pressure away. To alleviate is ad- + levāre — to bring lightness to a burden, to ease it. Both words are really about the same gesture: a hand lifting a load off a tired back. Levity keeps the adjective levis almost untouched — "lightness," but of mood: treating a serious thing too lightly.

A few members wandered further. Levy comes from levāre too — to "raise" troops or "raise" money, the way English still says raise an army or raise taxes. Levee (a river embankment, and also a French king's morning reception) came through French levée, "a raising." The strangest member is relevant: Latin relevāre literally meant "to lift up again," but in legal Scots and later English it shifted to "bearing upon, lifting the matter into view" — something relevant is information lifted up and placed where it matters.

One false friend: level looks like it belongs here, but it descends from Latin lībella, a little balance or water-level (the libr family of libra, "scales"). It is about flatness and balance, not lifting. So levelheaded is "balanced-headed," not "lifted-headed."

The pattern to carry away: when a lev word means going up, think levāre (elevate, lever, levy); when it means a weight coming off, think levis (relieve, alleviate, levity).