Definition of frivolously in US English:

frivolously

adverb

  • See frivolous

    • ‘I could never frivolously spend money like that.’
    • ‘Giant hogweed is not to be dealt with frivolously.’
    • ‘The funds have either not been utilised or have been wasted frivolously.’
    • ‘The responsibility of the monarch extends beyond what one commentator recently termed the frivolously enjoyable practice of buying art.’
    • ‘I don't feel it's something to be taken lightly or frivolously.’

Pronunciation

frivolously

/ˈfrɪvələsli//ˈfrivələslē/