1. Under a moral obligation to do something
   "Fanny was obliged to introduce him to Mr. Crawford";
   - duty-bound

1. Force somebody to do something
   "We oblige all students to fill out this form";
   - compel, obligate
    
2. Bind by an obligation; cause to be indebted
   "He's obliged by a contract";
   - bind, hold, obligate
    
3. Provide a service or favour for someone
   "We had to oblige him";
   - accommodate

See also: obligated

Type of: abide by, cause, comply, follow, get, have, induce, make, relate, stimulate