upsurge (n.)

• access
• accession
• accretion
• accrual
• accruement
• accumulation
• addition
• advance
• aggrandizement
• amplification
• appreciation
• ascension
• ascent
• augmentation
• ballooning
• boom
• boost
• broadening
• build
• buildup
• clamber
• climb
• climbing
• crescendo
• development
• edema
• elevation
• enlargement
• escalade
• expansion
• extension
• flood
• fountain
• gain
• growth
• gush
• hike
• increase
• increment
• inflation
• jet
• jump
• leap
• levitation
• loom
• mount
• mounting
• multiplication
• productiveness
• proliferation
• raise
• rear
• rise
• rising
• saltation
• soaring
• spiral
• spire
• spout
• spread
• spring
• spurt
• surge
• swelling
• takeoff
• tower
• tumescence
• up
• updraft
• upgrade
• uphill
• uplift
• upping
• uprising
• upturn
• vault
• wax
• waxing
• widening