1. (v.) To grow broad; to become broader or wider.

2. (v. t.) To make broad or broader; to render more broad or comprehensive.

accrue accumulate add to advance aggrandize amplify appreciate augment balloon bloat blow up boom boost breed build build up bulk bulk out crescendo deal in generalities deepen develop dilate distend ecumenicize enlarge exalt expand extend fatten fill out gain gain strength generalize get ahead globalize go up greaten grow hike hike up huff increase inflate intensify jack up jump up lengthen magnify make a generalization maximize mount multiply open outspread outstretch parlay proliferate puff puff up pump pump up put up pyramid raise rarefy rise run up shoot up snowball spread spread out strengthen stretch sufflate swell thicken tumefy universalize up wax widen