obligate
英['ɒblɪgeɪt] 美['ɒbləˌgeɪt]
"an obligate anaerobe can survive only in the absence of oxygen"
"We compel all students to fill out this form"
"obligate money"
"He's held by a contract"
"I'll hold you by your promise"
You are not only warranted but obligated to vindicate yourself.
出自:W. AndersonHe feared to obligate himself to do something.
出自:T. Dreiser