Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb roil

2 senses of roil

Sense 1
churn, boil, moil, roil -- (be agitated; "the sea was churning in the storm")
       => move -- (move so as to change position, perform a nontranslational motion; "He moved his hand slightly to the right")

Sense 2
roil, rile -- (make turbid by stirring up the sediments of)
       => agitate, vex, disturb, commove, shake up, stir up, raise up -- (change the arrangement or position of)

Antonyms of adj roiling

1 sense of roiling

Sense 1
churning, roiling, roiled, roily, turbulent -- ((of a liquid) agitated vigorously; in a state of turbulence; "the river's roiling current"; "turbulent rapids")

INDIRECT (VIA agitated) -> unagitated -- (not physically disturbed or set in motion)

Similarity of adj roiling

1 sense of roiling

Sense 1
churning, roiling, roiled, roily, turbulent -- ((of a liquid) agitated vigorously; in a state of turbulence; "the river's roiling current"; "turbulent rapids")
       => agitated (vs. unagitated) -- (physically disturbed or set in motion; "the agitated mixture foamed and bubbled")