happening by chance; not planned I suppose your presence here today is not entirely coincidental. It's purely coincidental that we both chose to name our daughters Emma.
adjectivejump to other results
NAmE//koʊˌɪnsəˈdɛntl//[not usually before noun]
coincidentallyjump to other results
NAmE//koʊˌɪnsəˈdɛntli//, NAmE//koʊˌɪnsəˈdɛntəli//adverb Coincidentally, they had both studied in Paris.