obligate

To compel or constrain by a social, legal, or moral requirement. synonym: force.

To cause to be grateful or indebted; oblige.

To commit (money, for example) in order to fulfill an obligation.

Able to exist or survive only in a particular environment or by assuming a particular role.

An obligate organism.

To bind by legal or moral tie, as by oath, indenture, or treaty; bring under legal or moral obligation; hold to some specific act or duty; pledge.

To place under obligation in any way, as on account of continued favors or repeated acts of kindness; make beholden or indebted; constrain by considerations of duty, expediency, courtesy, etc.

Constrained or bound; having of necessity a particular character, or restricted to a particular course.

An obligate parasite. See quotation under obligate, a.

To bring or place under obligation, moral or legal; to hold by a constraining motive.