daily lifes vs daily lives


New Member
I'm redacting a document where I wrote the following sentence: "... to use as useful tool in their daily lives" But I'm not sure if I've should used "daily lifes". When should I use one expression instead the other?
  • entangledbank

    Senior Member
    English - South-East England
    The plural of 'life' is 'lives' in all expressions except 'still life' (a genre of painting), which makes 'still lifes'.
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