There are a number of synonyms for the word "feebles". The word means weak or feeble, and some synonyms include frail, infirm, debilitated, sickly, and delicate. These words all describe someone or something that is not strong or robust, and may be easily injured or damaged. Other synonyms for "feebles" might include powerless, helpless, and weak-kneed. These words all suggest a lack of strength and ability to do things on one's own. Regardless of the synonym used, the concept remains the same: someone or something that is not strong or capable of performing at a high level.