The phrase "am of use" suggests something that is helpful or beneficial. Its antonyms would therefore be words that convey the opposite meaning, such as "useless," "inconvenient," "unhelpful," "unproductive," and "unbeneficial." These words indicate that whatever is being referred to is not effective in achieving its intended purpose or is not contributing positively to a situation. Synonyms for "am of use" include "valuable," "advantageous," "beneficial," and "significant." Understanding the antonyms of a word can help to expand vocabulary, clarify meanings, and enhance communication skills when selecting the right words to express oneself.