Meanings
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1
verb
to become ripe and ready to eat or harvest
The peaches ripen in late summer.
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2
verb
to cause fruit, grain, or another food to become ripe
Warm days and cool nights ripen the grapes slowly.
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3
verb
figurative: to develop into a fuller, more mature, or ready state
Their cautious friendship ripened into trust.
Thesaurus
Synonyms
Etymology
From Middle English ripenen, based on ripe + the verb-forming suffix -en. It inherited both intransitive 'become ripe' and transitive 'make ripe' uses.