To vouch for (someone); to attest to the character of (someone).
To be held responsible for; to take the blame for something.
To guarantee.
Used other than figuratively or idiomatically: see answer, for.
To imagine or suspect; to conjecture; to posit with contestable premises.
Thought, imagination, or conjecture, which may be based upon feeble or scanty evidence; suspicion; guess.
Reflection; thought; posit.