fe·lic·i·tate 
(fĭ-lĭsĭ-tāt′)
(fĭ-lĭsĭ-tāt′)tr.v. fe·lic·i·tat·ed, fe·lic·i·tat·ing, fe·lic·i·tates
1. To offer congratulations to: "I felicitate you on your memory, sir" (John Fowles).
2. Archaic To make happy.
[Late Latin fēlīcitāre, fēlīcitāt-, to make happy, from fēlīx, fēlīc-, fortunate; see dhē(i)- in the Appendix of Indo-European roots.]
fe·lici·ta′tor n.