Verb

• S: (v) compel, oblige, obligate (force somebody to do something) "We compel all students to fill out this form"
• direct troponym / full troponym
• direct hypernym / inherited hypernym / sister term
• cause
• S: (v) act, move (perform an action, or work out or perform (an action)) "think before you act"; "We must move quickly"; "The governor should act on the new energy bill"; "The nanny acted quickly by grabbing the toddler and covering him with a wet towel"
• derivationally related form
• sentence frame
• S: (v) obligate (commit in order to fulfill an obligation) "obligate money"
• S: (v) oblige, bind, hold, obligate (bind by an obligation; cause to be indebted) "He's held by a contract"; "I'll hold you by your promise"

Adjective

• S: (adj) obligate (restricted to a particular condition of life) "an obligate anaerobe can survive only in the absence of oxygen"
• domain category
• antonym
• W: (adj) facultative [Opposed to: obligate] (able to exist under more than one set of conditions) "a facultative parasite can exist as a parasite or a saprophyte"