Synonyms and Antonyms of expansion

  1. 1 something added (as by growth) the museum's new wing is only the first in a series of expansions planned for the next decade Synonyms accretion, accrual, addendum, addition, augmentation, boost, increase, gain, increment, more, plus, proliferation, raise, rise, step-up, supplement, uptickRelated Words accumulation, assemblage, collection, gathering; complement; accession, appendix, continuation, extension, uptrend, upturn; jump, run-up, spikeNear Antonyms deduction, subtractionAntonyms abatement, decline, decrease, decrement, depletion, diminishment, diminution, drop-off, fall, falloff, lessening, loss, lowering, reduction, shrinkage, step-down

  2. 2 the act or process of going from the simple or basic to the complex or advanced the expansion of remedial reading classes into a district-wide program using school volunteers for a variety of needs Synonyms elaboration, evolution, development, growth, progress, progressionRelated Words advancement, betterment, improvement, perfection, refinement; incubation, maturation, maturing, ripening; blossoming, flourishing, flowering; addition, augmentation, enhancement, supplementation; emergence, evolvement, metamorphosisNear Antonyms backslide, lapse, relapse; decadence, decay, decaying, declension, declination, decline, degeneracy, degeneration, degradation, descent, deterioration, devaluation, downfall, downgrade, ebbing, falling, weakeningAntonyms regress, regression, retrogression, reversion

  3. 3 a wide space or area we gazed in awe at the star-strewn expansion of nighttime sky above us Synonyms breadth, distance, expanse, extent, field, length, plain, reach, sheet, spread, stretch, wasteRelated Words domain, sphere, territory; compass, range, scope, sweep; gamut, scale, spectrum; depth, emptiness, void; extension, latitude, span; amplitude, immensity, magnitude

Learn More about expansion

Seen and Heard

What made you want to look up expansion? Please tell us where you read or heard it (including the quote, if possible).


feeling or affected by lethargy

Get Word of the Day daily email!