Synonyms: modify
Definition: make less severe or harsh or extreme
Usage: please modify this letter to make it more polite; he modified his views on same-gender marriage
Similar words: change
Definition: undergo a change; become different in essence; losing one's or its original nature
Usage: She changed completely as she grew older; The weather changed last night
Definition: add a modifier to a constituent
Similar words: add
Definition: make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of
Usage: We added two students to that dorm room; She added a personal note to her letter; Add insult to injury; Add some extra plates to the dinner table