Webster's Revised Unabridged Dictionary · 1913

Obligate

Obligate , transitive verb

[Latin obligatus, past participle of obligare. See Oblige.]

1.
To bring or place under obligation, moral or legal; to hold by a constraining motive.
Obligated by a sense of duty. — Proudfit
That's your true plan -- to obligate The present ministers of state. — Churchill
2.
To bind or firmly hold to an act; to compel; to constrain; to bind to any act of duty or courtesy by a formal pledge.
That they may not incline or be obligated to any vile or lowly occupations. — Landor