fluid

Takes container's shape

Fluid describes something that flows—liquids and gases are fluids, distinguished from solids by their ability to move and change shape.

The word extends to anything similarly flowing or changeable: a fluid motion, fluid boundaries, a fluid situation.

Fluid can also mean not fixed or settled: The plans are still fluid.

Gender fluid describes identity that shifts rather than remaining constant.

smooth

graceful

Elegant in movement

continuous · unbroken · gliding · silky · lyrical · elegant · uninterrupted · sinuous · liquid · supple

flowing

stream

Steady continuous flow

gush · trickle · ooze · seepage · drainage · surge · jet · spout · discharge · circulation

liquid

water

Clear essential liquid

  • oilSlippery viscous fluid
  • milkMammalian nursing fluid
  • juiceExtracted fruit liquid

blood · broth · serum · syrup · gasoline · mercury · solvent · ink · nectar · tea

adaptable

flexible

Able to bend freely

responsive · agile · nimble · malleable · elastic · resilient · supple · accommodating · evolving · shifting

medical

intravenous

Into the vein

infusion · retention · drainage · edema · aspiration · transfusion · cerebrospinal · synovial · amniotic · pleural

plumbing

pipe

Hollow conveyance channel

  • valveFluid flow controller
  • drainChannel for wastewater
  • pumpFluid-moving machine

tank · hose · faucet · hydraulic · reservoir · conduit · tubing · pressure · gauge · fitting

unstable

volatile

Liable to sudden change

inconsistent · mercurial · erratic · shifting · uncertain · transient · unsettled · capricious · temperamental · turbulent

linguistics

accusative

Case for direct objects

agreement

Categories
Opposites
physical state

fluidsolid

Firm matter state

hard · gas · nonliquid · frozen · rigid

movement quality

fluidjerky

Cured meat snack

stiff · awkward · clumsy · halting · choppy

changeability

fluidfixed

Restored or immovable

static · rigid · inflexible · stable · unchangeable

Phrases
Family

influence, flush, fluent, influx, fluctuate, fluidity, affluence, fluid intelligence, fluidized bed

Familiarity
Top 10,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G