What does the cryptic crossword clue "Not all relationships terrify cool dude (7)" mean?

The definition is "c". The wordplay uses a charade (building blocks). HIPS (synonym="HIPS") + TER (synonym="TER") = HIPSTER The answer is HIPSTER.

Not all relationships terrify cool dude (7)

Guardian Cryptic #29070 | 3 Down | 2023-05-15 flower