The antonyms for the word "most feelingless" are varied and can differ based on the context used. Some suitable antonyms for the emotionless attribute include emotional, sensitive, compassionate, empathetic, and sympathetic. All these words denote a heightened sense of emotion and a connection to others, making them the opposite of feelingless. Other antonyms that can be used include expressive, affectionate, kind, caring, and tender. These antonyms denote a positive and nurturing attitude towards others and imply a deep sense of feeling for those around. The use of antonyms can help to clarify the intended message and bring out the desired emotions in any piece of writing.