ballooning (n.)

• access
• accession
• accretion
• accrual
• accruement
• accumulation
• addition
• advance
• aeronautics
• aggrandizement
• airline
• amplification
• appreciation
• ascent
• astronautics
• augmentation
• aviation
• bagging
• boom
• boost
• broadening
• buildup
• crescendo
• development
• edema
• elevation
• enlargement
• expansion
• extension
• flight
• flood
• floppy
• flying
• gain
• gliding
• growth
• gush
• hike
• increase
• increment
• inflation
• jump
• leap
• limp
• lop
• loppy
• mounting
• multiplication
• pilotage
• productiveness
• proliferation
• raise
• rise
• sailing
• sailplaning
• soaring
• spread
• surge
• swag
• swelling
• tumescence
• up
• upping
• upsurge
• upturn
• waxing
• widening
• winging