obtest

US: (ob test′)

WordReference Random House Unabridged Dictionary of American English © 2025

ob•test  (ob test′), v.t. 

1. to invoke as witness.
2. to supplicate earnestly;
   beseech.

v.i. 

3. to protest.
4. to make supplication;
   beseech.

• Latin obtestārī, equivalent. to ob- ob- + test(is) a witness + -ārī infinitive suffix
• 1540–50

ob′tes•ta′tion, n.