Verb (used without object) : to assent to a statement. ,Assenting to his demands, I did as I was told.    From Dictionary.com. 

Assenting Annie didn't throw any back, as Annie is merely as assenter, but neither of the honorable ladies who were coming to break my bread knew that Susie McDougal's ears were hearing ears.    From Wordnik.com.  [Miss Gibbie Gault] Reference

Presently he called on his comrades to stop, and held with them a long palaver, in which the French horn seemed to be an objector, and the trombone an assenter, while the key-bugle didn't seem to care.    From Wordnik.com.  [Shifting Winds A Tough Yarn] Reference

"Yaas," said the assenter; and off they cantered.    From Wordnik.com.  [Love Me Little, Love Me Long] Reference

But the pasha was not wholly the simple assenter.    From Wordnik.com.  [The Fortieth Door] Reference