v.
Pronunciation: ' ro ̇ i(- ə )l, vt 2 is also ' r ī (- ə )l
Function: verb
Etymology: origin unknown
Date: 1590
transitive verb
1 a : to make turbid by stirring up the sediment or dregs of b : to stir up : DISTURB , DISORDER <changes that have roil ed the country>
2 : RILE 1
intransitive verb : to move turbulently <a roil ing sea> : be in a state of turbulence or agitation <conflicting emotions roil ing inside her>