interjection, adverb taking the 'to' particle, adverb
phooey; ptui; spit
Onomatopoeic expression of spitting or disgust; often used when spitting something out or showing contempt.
ペッと唾を吐いた。
He spat with a 'ptui'.
まずい薬をペッと吐き出した。
He spat out the bad-tasting medicine with a 'phooey'.