- increase
- extension
- enlargement
- growth
- development
- amplification
- relocation
- expand
- elaboration
- consolidation
- construction
- modernization
- step-up
- acquisition
- improvements
- magnification
- creation
- inflation
- project
- extend
- intensification
- expanding upon
- move
- completion
- new
- continuation
- renewal
- integration
- reductions
- phase
- strategic
- increases
- upswing
- expanding
- expanded
- improvement
- enlarge
- existing
- expansive
- build
- broaden
- widen
- augment
- discussion
- annotation
- math
- function
- discourse
- supplementation
- dilatation
- embellishment
- stretching
- distention
- dilation
- treatment
- maths
- mathematics
- distension
- embroidery
- map
- mapping
- expandable
- exaggeration
- dilate
- augmenter
- augmentation
- lengthen
- increasingly
- escalate
- incremental
- increment
- proliferation
- exaggerate
- buildup
- accretion
- maximize
- hypertrophy
- crescendo
- swell
- eke
- proliferate
- amplify
- subjoining
- subjunction
- annotating
- expatiation
- accretive
- crescentic
- outspread
- augmentative
- escalation
- increasement
- current
- grow
- magnify
- significant
- accretionary
- regrow
- plan
- overextend
- accrease
- rapid
- outstretched
- increasable
- projects
- reincrease
- surge
- its
- maximization
- shift
- inflate
- proposed
- developmental
- major
- forthwax
- future
- extending
- turgid
- plans
- aggrandize
- economic
- increaseful
- redouble
- outgrow
- end
- boost
- continues
- extended
- changes
- intensify
- spur
- tumor
- reduction
- larger
- distend
- trade
- extensile
- intumescence
- starting
- outgrowth
- transition
- forwax
- increasing
- planned
- increased
- substantial
- impact
- change
- creating
- overmultiply
- part
- beginning
- dispread
- global
- limited
- continuing
- cost
- multiplicative
- due
- closer
- expected
- term
- activity
- interest
- key
- further
- coupled
- system
- considering
- cuts
- spending
- gap
- commercial
- strategy
- direct
- accelerate
- greater
- improved
- scale
- period
- decline
- recovery
- accelerated
- entire
- policy
- decade
- effect
- create
- terms
- sector
- operating
- measures
- ingrowth
- pullulate
- growthful
- growingly
- elongation
- ontogenetic
- vegetate
- excrescence
- intergrown
- bloat
- eurosceptic
- ingrow
- elaborate
- misgrow
- accrue
- maturational
- expanse
- intergrow
- embiggen
- ungrown
- ocker
- growable
- extendible
- psychogenesis
- pullulation
- hyperextend
- heighten
- burgeon
- nonincrease
- elongate
- overwax
- accrete
- propagation
- overgrow
- hyperbolic
- catalysis
- protract
- skyrocket
- extensive
- renovation
- greenfield
- grower
- waxen
- greaten
- internationalization
- mathematical function
- single-valued function
- auxesis
- outstretch
- aggrandizement
- rollout
- enhance
- diversification
- revitalization
- realignment
- forgrow
- rev
- exsert
- acidosis
- prolongation
- upregulate
- upgrade
- accelerando
- transformation
- develop
- agriculturist
- teinoscope
- underdevelopment
- dysplasia
- prolong
- vasocongestion
- supplement
- additions
- add to
- refurbishment
- stretch
- accumulation
- redevelopment
- progressive
- polyp
- multiply
- unfold
- reinvestment
- redesign
- inclusion
- monetary gain
- edema
- revamping
- superincreasing
- get big
- teethe
- initiatives
- forspread
- widening
- ramp up
- incretin
- rev up
- broadening
- evolution
- footprint
- infusion
- upshock
- foray
- turnaround
- tumid
- stretchable
- expansionist
- upsample
- gainside
- renaissance
- investment
- osis
- cytogenesis
- closure
- agflation
- remodeling
- advancement
- degrowth
- grow op
- humidification
- implementation
- anticorrelation
- pseudohypertrophy
- slowdown
- infrastructure
- scale up
- restructuring
- divestiture
- strengthening
- stabilization
- upturn
- overhaul
- establishment
- repositioning
- annexation
- contraction
- redefinition
- revenues
- doubling
- electrification
- rebirth
- reshaping
- rejuvenation
- proximity
- launch
- flagship
- closings
- operation
- deceleration
- downsizing
- reintroduction
- maturation
- influx
- rebuilding
- encroachment
- blow up
- shoot up
- put on weight
- spread out
- stretch out
- vitalization
- reinvigoration
- divesture
- remilitarization
- reindustrialization
- densification
- reallocation
- finalization
- rice grow
- snazz up
- work up
- pareto efficient
- pareto optimal
- capital gain
- develop product
- jevons paradox
- power surge
- build up
- bed in
- puff up
- aeolian attachment
- grow out of
- bump up
- twist knife
- equivalent variation
- square foot
- vertical integration
- capital outlay
- anchor tenant
- feasibility study
- capital expenditure
- expansions
- expansion
- buildout
- rapidly expanding
- reconfiguration
- enlarging
- exponential growth
- upgrades
- upgrading
- revamp
- expands
- acquisitions
- renovations
- nearing completion
- constructing
- remodel
- nears completion
- geographic diversification
- geographic footprint
- diversifying
- refurbishments
- consolidations
- developments
- reopening
- capex
- diversify
- relocating
- upgradation
- expansionary
- initiative
- relocate
- rollouts
- grow organically

That's about all the expansion related words we've got! I hope this list of expansion terms was useful to you in some way or another. The words down here at the bottom of the list will be in some way associated with expansion, but perhaps tenuously (if you've currenly got it sorted by relevance, that is). If you have any feedback for the site, please post it here, but please note this is only a hobby project, so I may not be able to make regular updates to the site. Have a nice day! 🐕