The antonyms for the phrase "most put-out" would include terms such as satisfied, pleased, content, gratified, fulfilled, delighted, happy, joyous, and cheerful. Instead of being frustrated or irritated, these adjectives express a positive and satisfied emotion. Rather than feeling discontent or unhappy, you feel pleased and fulfilled. A person who is most put-out is unhappy and disheartened, but someone who is pleased and happy radiates positivity and gratification. The opposite of being put-out is being content and ecstatic, which portrays a sense of fulfillment and satisfaction.