roils

Makes water cloudy

Roils is the third-person singular of roil, meaning to disturb or stir up.

Water roils when agitated into turbulence: The storm roiled the sea.

Emotions or situations roil when unsettled: Controversy roiled the committee.

The word often appears in financial contexts: News of the merger roiled markets.

Roil overlaps with rile, and the two are sometimes confused.

churns

stirs

Blends by circling

eddies · froths · whirls · billows · boils · seethes · bubbles · foams · whips · turbulence

provokes

agitates

Provokes unrest or motion

incenses · inflames · riles · infuriates · enrages · upsets · disturbs · perturbs · unsettles · disquiets

turmoil

disrupts

Interferes with normal operation

convulses · disorders · troubles · shakes up · disquiets · perturbs · confounds · unnerves · rattles · distresses

Opposites
physical disturbance of liquids/substances

roilssettles

Comes to rest

calms · stills · clarifies · clears · smooths

emotional/social agitation

roilscalms

Reduces agitation

soothes · settles · pacifies · quiets · tranquilizes

Family

roil, roiling, roiled

Familiarity
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Used worldwide · Timeless · Everyday, not technical · Rated G