" built-up "

1: as in amassed, aggregated;

•  Synonyms : 

•  accruable,

•  accrued,

•  aggregated,

•  amassed,

•  compiled,

•  conglomerated,

•  increscent,

•  progressive,

•  gradual,

•  step-by-step,

•  stepwise,

•  accretive,

•  accumulative,

•  additive,

•  conglomerative,

•  cumulative,

•  incremental

•  Antonyms : 

•  decremental,

•  decrescent,

•  degressive,

•  regressive

1: to become greater in extent, volume, amount, or number;

  * e.g., " ... static electricity built up on the cat's fur "

•  Synonyms : 

•  accelerated,

•  accumulated,

•  appreciated,

•  ballooned,

•  boomed,

•  burgeoned,

•  climbed,

•  enlarged,

•  escalated,

•  expanded,

•  gained,

•  increased,

•  mounted,

•  multiplied,

•  mushroomed,

•  proliferated,

•  rolled up,

•  rose,

•  snowballed,

•  spread,

•  swelled,

•  waxed

•  Antonyms : 

•  contracted,

•  decreased,

•  diminished,

•  dwindled,

•  lessened,

•  receded,

•  waned

2: to gradually increase in;

  * e.g., " ... the roller coaster built up momentum "

•  Synonyms : 

•  gained,

•  gathered,

•  grew (in),

•  picked up

•  Antonyms : 

•  decreased (in),

•  lost

3: to gradually form into a layer, pile, or mass;

  * e.g., " ... evidence that the toxic chemical builds up in the bloodstream to unhealthy levels "

•  Synonyms : 

•  accreted,

•  accumulated,

•  amassed,

•  collected,

•  concentrated,

•  conglomerated,

•  gathered,

•  massed,

•  piled (up),

•  stacked (up)

•  Antonyms : 

•  abated,

•  decreased,

•  de-escalated,

•  diminished,

•  downsized,

•  dwindled,

•  lessened,

•  lowered,

•  minified,

•  reduced,

•  subtracted (from)

1: to become greater in extent, volume, amount, or number;

  * e.g., " ... static electricity built up on the cat's fur "

•  Synonyms : 

•  accelerate,

•  accumulate,

•  appreciate,

•  balloon,

•  boom,

•  burgeon,

•  climb,

•  enlarge,

•  escalate,

•  expand,

•  gain,

•  increase,

•  mount,

•  multiply,

•  mushroom,

•  proliferate,

•  rise,

•  roll up,

•  snowball,

•  spread,

•  swell,

•  wax

•  Antonyms : 

•  contract,

•  decrease,

•  diminish,

•  dwindle,

•  lessen,

•  recede,

•  wane

2: to gradually increase in;

  * e.g., " ... the roller coaster built up momentum "

•  Synonyms : 

•  gain,

•  gather,

•  grow (in),

•  pick up

•  Antonyms : 

•  decrease (in),

•  lose

3: to gradually form into a layer, pile, or mass;

  * e.g., " ... evidence that the toxic chemical builds up in the bloodstream to unhealthy levels "

•  Synonyms : 

•  accrete,

•  accumulate,

•  amass,

•  collect,

•  concentrate,

•  conglomerate,

•  gather,

•  mass,

•  pile (up),

•  stack (up)

•  Antonyms : 

•  abate,

•  decrease,

•  de-escalate,

•  diminish,

•  downsize,

•  dwindle,

•  lessen,

•  lower,

•  minify,

•  reduce,

•  subtract (from)