- [[t]æt[/t]] unstressed [[t]ət, ɪt[/t]]prep.1) (used to indicate a point or place occupied in space); in, on, or near:to stand at the door[/ex]2) (used to indicate a location or position, as in time, on a scale, or in order):at age 65; at zero; at the end[/ex]3) (used to indicate incidence or occurrence):at the sound of the bell; at low tide[/ex]4) (used to indicate presence or location):at home; at hand[/ex]5) (used to indicate amount, degree, or rate):at great speed; at high altitudes[/ex]6) (used to indicate a direction, goal, or objective); toward:Look at that[/ex]7) (used to indicate occupation or involvement):at work; at play[/ex]8) (used to indicate a state or condition):at ease; at peace[/ex]9) (used to indicate a cause or source):She was annoyed at their carelessness[/ex]10) (used to indicate relative quality or value):at one's best; at cost[/ex]•Etymology: bef. 900; ME; OE æt, c. OFris et, OON, Go at, OHG az, L ad IIat[[t]ɑt, æt[/t]] n. pl. at.num a monetary unit of Laos, equal to 1/100 of a kip•Etymology: 1950–55; < Lao; ult. < Pali aṭṭha eight
From formal English to slang. 2014.