"ripening" in the noun sense
1. maturation, ripening, maturement
coming to full development becoming mature
2. ripening, aging, ageing
acquiring desirable qualities by being left undisturbed for some time
"ripening" in the verb sense
1. ripen, mature
cause to ripen or develop fully
"The sun ripens the fruit"
"Age matures a good wine"
"The plums ripen in July"
Source: WordNet® (An amazing lexical database of English)
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