- 1roil something to stir up the mud or other material that settles at the bottom of water Strong winds roil these waters.
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- 2roil somebody/something to disturb or upset someone or something The financial scandal has roiled the stock market.
roil
verbNAmE//rɔɪl//
Verb Forms present simple I / you / we / they roil he / she / it roils past simple roiled -ing form roilingCheck pronunciation: roil