Obligated or locked in (often, but not necessarily, by a pledge) to some course of action.
Required by logic to endorse the conclusion of an argument.
Associated in an exclusive (but not necessarily permanent) sexual relationship.
Showing commitment.
Having properties which are counterintuitive or difficult to handle.
Relating to, amounting to, causing, or caused by a physical or mental disorder.
Pertaining to pathology.
Having properties that cause unusually bad behaviour, especially regarding correctness or performance.