Main entry: bind, hold, obligate, oblige
Definition: bind by an obligation; cause to be indebted
Usage: He's held by a contract; I'll hold you by your promise
Main entry: obligate
Definition: commit in order to fulfill an obligation
Usage: obligate money
Main entry: obligate, oblige, compel
Definition: force somebody to do something
Usage: We compel all students to fill out this form
Main entry: obligate
Definition: restricted to a particular condition of life
Usage: an obligate anaerobe can survive only in the absence of oxygen