from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To supplicate; entreat.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To implore, beseech, plead, beg.
- v. To call on a witness (often God) to confirm that something is true.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To call to witness; to invoke as a witness.
- transitive v. To beseech; to supplicate; to beg for.
- intransitive v. To protest.
from The Century Dictionary and Cyclopedia
- To call upon earnestly; entreat; conjure.
- To beg for; supplicate.
- To protest.
Latin obtestārī : ob-, to; see ob- + testārī, to call as a witness (from testis, witness; see trei- in Indo-European roots).(American Heritage® Dictionary of the English Language, Fourth Edition)