Tightknit is a word that describes a close-knit group or community. There are many synonyms for this word that can be used to describe a group that is cohesive, supportive, and united. Some of the most common synonyms for tightknit include close, intimate, connected, bonded, united, and cohesive. Other synonyms that can be used to describe a tightknit group include supportive, loyal, committed, and dependable. No matter what synonym is used, each one speaks to the strong sense of community and togetherness that comes from being part of a close group.