The word "leechlike" is often used to describe people or things that cling onto others for their own advantage, much like a leech latches onto its host. There are several synonyms for this term including parasitic, bloodsucking, opportunist, exploitative, dependent, needy, and sycophantic. These words all convey a sense of taking without giving back or relying heavily on another entity for personal gain. It is important to recognize when these characteristics are present in people or situations, as they can be unhealthy and damaging to relationships and personal growth. By being aware of these tendencies, we can strive to cultivate healthier and more equitable relationships in our lives.