Under an obligation to do something for someone.(adjective)
Indebted because of a favor done.(adjective)
Simple past tense and past participle of oblige.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "obliged" in a sentence
"He wished his old aunt Crumpe, he said, to live and enjoy all she had as long as she could; and if she chose to leave it to him after her death, well and good; he should be much obliged to her: if she did not, why well and good; he should not _be obliged_ to be obliged to her: and that, to his humour, would perhaps be better still."
"Last night when the vertigo-induced nausea was making it hard to sleep, the brain obliged by writing a big chunk of [cue ominous pipe organ music here] the dreaded synopsis."
"I am obliged always to use the English word 'Grace' in two senses, but remember that the Greek [Greek: charis] includes them both (the bestowing, that is to say, of Beauty and Mercy); and especially it includes these in the passage of Pindar's first ode, which gives us the key to the right interpretation of the power of sculpture in Greece."