Synonyms of expansion

expansion

noun

ik-ˈspan(t)-shən 

1

as in increase

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 & Similar Words

• increase
• boost
• addition
• gain
• rise
• augmentation
• raise
• increment
• proliferation
• accrual
• accretion
• accumulation
• supplement
• continuation
• plus
• uptick
• step-up
• addendum
• extension
• more
• collection
• complement
• gathering
• upturn
• spike
• jump
• appendix
• accession
• assemblage
• uptrend
• run-up

Antonyms & Near Antonyms

• reduction
• decrease
• loss
• shrinkage
• depletion
• decline
• diminution
• lowering
• fall
• abatement
• lessening
• decrement
• diminishment
• deduction
• falloff
• drop-off
• subtraction
• step-down

2

as in evolution

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 & Similar Words

• evolution
• development
• progress
• progression
• growth
• advancement
• improvement
• emergence
• elaboration
• enhancement
• maturation
• flowering
• refinement
• incubation
• betterment
• maturing
• augmentation
• ripening
• metamorphosis
• addition
• flourishing
• supplementation
• blossoming
• evolvement
• perfection

Antonyms & Near Antonyms

• regression
• reversion
• retrogression
• regress
• lapse
• decline
• relapse
• degradation
• deterioration
• decay
• falling
• weakening
• degeneration
• devaluation
• downfall
• degeneracy
• declination
• descent
• downgrade
• decadence
• declension
• backslide
• decaying
• ebbing

3

as in expanse

a wide space or area

we gazed in awe at the star-strewn expansion of nighttime sky above us

Synonyms & Similar Words

• expanse
• stretch
• length
• extent
• sheet
• distance
• reach
• breadth
• plain
• field
• spread
• scope
• territory
• waste
• depth
• extension
• domain
• spectrum
• scale
• sphere
• sweep
• range
• amplitude
• void
• span
• compass
• magnitude
• gamut
• latitude
• emptiness
• immensity

Example Sentences

Recent Examples of expansion

Thompson, who is eligible for a rookie-scale contract extension this offseason, explored taking more shots farther away from the rim last season, which could bode well for an overall expansion of his offensive game. — Hunter Patterson, New York Times, 31 July 2026

Every major era of economic expansion has demanded its own capital architecture, from railroads to fiber optics. — Jim Zelter, Fortune, 31 July 2026

The money funds European retail expansion and a herbal range. — Josipa Majic Predin, Forbes.com, 31 July 2026

The deli was originally expected to close until July 31 to finish the expansion project, including a redone kitchen. — Fousia Abdullahi, Fort Worth Star-Telegram, 31 July 2026