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vain (EN)
adjectif

adjectif “vain”

forme de base vain (more/most)
  1. vain (sans résultat, inutile)
    They tried in vain to push the broken car up the steep hill.
  2. vaniteux (concernant la fierté excessive)
    She was so vain that she spent hours looking at herself in the mirror every day.
  3. futile (manquant de valeur ou d'importance)
    His promise turned out to be vain when he failed to follow through with any action.