n. (pl. truths) 1 the quality or a state of being true or truthful (doubted the truth of the statement; there may be some truth in it). 2 a what is true (tell us the whole truth; the truth is that I forgot). b what is accepted as true (one of the fundamental truths). in truth literary truly, really. to tell the truth (or truth to tell) to be frank. truth drug any of various drugs supposedly able to induce a person to tell the truth. truth table a list indicating the truth or falsity of various propositions in logic etc. truthless adj.
[ OE triewth, treowth (as TRUE) ]