To shrivel up is to dry and wrinkle into something smaller. Shrivel up in the heat.
Water leaving the cells is what does it, which is why a grape becomes a raisin. Leaves will shrivel up in a drought long before the plant itself is in danger.
1phraseshrivel upTo dry and wrinkle into something smaller.
“The whole crop would shrivel up in a fortnight without rain.”
shrivel up is a phrase.
Practised in Phrasal Verbs