psst
psst — exclamation
1. a quiet sound you make by pushing air through your lips to get someone to look a
a quiet sound you make by pushing air through your lips to get someone to look at you or listen to you, especially when you do not want other people to realize what is happening
Cyrus heard a soft 'Psst!' and turned to see Minh waving from across the library.
Imran whispered 'Psst!' to get his sister's attention during the movie.
pattern: whisper Psst + to-infinitive for purpose
A quiet 'Psst!' came from behind the bush, and Bao stopped walking to look around.
Reuben went 'Psst!' to warn his friend the teacher was coming back.
Tendai heard a 'Psst!' and knew Nikos was passing her a note.
用法筆記
Always spoken quietly with the lips almost closed. The word is written with one or more 's' letters (psst, pssst, pssst!) depending on how long the sound is held. Common in informal writing, comics, and text messages, but rarely used in formal speech.