truthˈful adjective

1. Habitually or actually telling what one believes to be true
2. Put forward in good faith as what one believes to be true
3. Conveying the truth

truthˈfully adverb

truthˈfulness noun

truthˈiness noun

1. Truth (rare)
2. Truthfulness
3. The quality of having an air of the truth without necessarily a close connection to it (informal)

truthˈless adjective

truthˈlessness noun

truthˈlike adjective

truthˈy adjective (rare)

1. True
2. Truthful

truth condition noun (logic)

The circumstances that must be satisfied for a statement to be true

truth drug or truth serum noun

Any of various drugs, such as scopolamine or thiopentone sodium, which make subjects under questioning less wary in their replies

truth function noun (logic)

A function that determines whether or not a complex sentence is true depending on the truth values of the component parts of the sentence

truth table noun

1. A Boolean logic table in which the binary digits 0 and 1 are assigned values either ‘true’ or ‘false’
2. A similar table giving the outputs from all combinations of input (electronics)

truthˈ-teller noun

truthˈ-telling adjective

truth value noun (logic)

The truth or falsity of a statement

God's (honest) truth

A thing or statement absolutely true

in truth

Truly, in fact

moment of truth see under moment

of a truth (Bible)

Truly

tell the truth

To speak truthfully, not to lie