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).
Phrases and idioms:
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.
Derivatives:
truthless adj.
Etymology: OE triewth, treowth (as TRUE)
Useful english dictionary. 2012.