The antonyms or opposites for the phrase "extend one hand" can be "withdraw one hand", "pull back one hand", or "retract one hand". These antonyms suggest the opposite action of showing support, offering help, or collaborating with someone. Instead, withdrawing one's hand shows a sign of reluctance, disapproval, or detachment. Pulling back or retracting one's hand implies a lack of interest, commitment, or sincerity. These antonyms portray a negative attitude, which may lead to misunderstandings, conflicts or gaps in communication. Therefore, it is essential to be aware of the antonyms for "extend one hand," and use them accordingly in the right context.