Compunctiously is an adverb that means showing remorse or regret. The spelling of this word follows the English orthography system which doesn't always reflect its pronunciation. In IPA phonetic transcription, the word would be spelled as /kəmˈpʌŋkʃəsli/. The word is pronounced with three syllables - kuhm-puhngk-shuh s-lee. The first syllable is unstressed, and the second syllable bears the primary stress. The 'ch' in the third syllable sounds like the 'k' in 'kite,' and the 's' at the end of the word is pronounced 'sli.'
The word "compunctiously" is derived from the Middle English word "compunccioun", which in turn comes from the Latin word "compunctio". The Latin term is a noun form of the verb "compungere", which means "to prick sharply" or "to sting". "Compungere" is a combination of "com", meaning "together", and "pungere", meaning "to prick". Over time, "compunction" developed in English to refer to a feeling of guilt or remorse. "Compunctiously" is the adverb form of "compunction", meaning to do something with a sense of guilt, remorse, or unease.