How many phonemes are in the word chirping?

* ch - /tʃ/ (one phoneme)

* i - /ɪ/ (one phoneme)

* rp - /rp/ (one phoneme, as the "r" is silent)

* i - /ɪ/ (one phoneme)

* ng - /ŋ/ (one phoneme)

Therefore, the word "chirping" has 5 phonemes.