cadarnhau

Etymology
From.

Verb

 * 1)  to strengthen, make fast or firm, secure, fortify, safeguard, reinforce, replenish; to harden, become obstinate; to cure, heal, make well; to perfect, complete
 * 2)  to declare, affirm, assert, allege; to substantiate, establish, make valid, ratify, sanction, authorize
 * 3)  to confirm, lay hands on