The word "in disposed" means unwilling or unprepared to do something, but its antonyms can be used to convey the opposite meaning. One antonym of in disposed is willing, which means someone is eager or happy to do something. Another antonym is prepared, which means to be ready to do something. Confident is another antonym, conveying a positive readiness to do something because of a belief in one's own abilities. Motivated is yet another antonym, conveying an internal drive to do something. These antonyms of in disposed can be used to describe someone who is ready, willing, and able to take action towards achieving their goals.