verb (used with object), fe·lic·i·tat·ed, fe·lic·i·tat·ing.
Origin of felicitate
1620s, "to render happy;" 1630s, "to reckon happy;" from Latin felicitatus, past participle of felicitare "to make happy," from felicitas "fruitfulness, happiness," from felix (see felicity). Meaning "congratulate" is from 1630s. Related: Felicitated; felicitating.