(p. pr. & vb. n.) of Widen.

access accession accretion accrual accruement accumulation addition adjunct advance aggrandizement ampliation amplification appreciation ascent augmentation ballooning bloating boom boost broadening buildup crescendo deployment development dispersion edema elevation enlargement expansion extension fanning out flare flood gain greatening growth gush hike hiking increase increment inflation jump leap magnification mounting multiplication productiveness proliferation raise raising rise snowballing splay spread spreading surge swelling tumescence up upping upsurge upswing uptrend upturn waxing