Webster’s Revised Unabridged Dictionary · 1913
Felicitate
Fe·lic′i·tate (·tāt), a. [L. felicitatus, p. p. of felicitare to felicitate, fr. felix, -icis, happy. See felicity.] Made very happy. [Archaic]
I am alone felicitate In your dear highness' love. Shak.
Fe·lic′i·tate, v. t. [imp. & p. p. Felicitated; p. pr. & vb. n. felicitating.] [Cf. F. féliciter.] 1. To make very happy; to delight.
What a glorious entertainment and pleasure would fill and felicitate his spirit. I. Watts.
2. To express joy or pleasure to; to wish felicity to; to call or consider (one's self) happy; to congratulate.
Every true heart must felicitate itself that its lot is cast in this kingdom. W. Howitt.
Syn. — See Congratulate.