Giving a high five can be an expression of celebration, recognition, or appreciation. There are a variety of synonyms for this common gesture, each with its own nuance and connotation. Some synonyms for "give a high five" include: 1. Fist bump 2. High ten 3. Slap hands 4. Palm slap 5. Bump knuckles 6. Five up 7. Air five 8. Greet with a clap 9. Congratulations slap 10. High hand. No matter what term is used, the meaning behind these gestures remains the same: a show of congratulations, camaraderie, and support. The choice of synonym can depend on the situation and the people involved, so it's always good to have a range of options available.