Onomatopoeia:
* "Woo woo": This is a classic and simple way to represent the sound, capturing the high-pitched and wavering nature.
* "Whee-oo": This adds a bit more detail to the rising and falling pitch of the whistle.
* "Wooo-whoop": This emphasizes the sharp, short ending of the whistle.
Phonetic transcription:
* [wʊ wʊ] This captures the "oo" vowel sound and the quick, repeated nature of the whistle.
* [wɪː wʊ] This shows the initial higher pitch and the drop in pitch towards the end.
Descriptive words:
* A shrill, piercing whistle
* A high-pitched, wavering sound
* A sharp, short whistle
Ultimately, the best way to represent the sound of a wolf-whistle depends on the context and the level of detail you want to convey.