be precipitated

collapse crash decline decrease depreciate diminish dip dive dwindle ease go down land plummet plunge settle sink slip slump stumble tumble

abate backslide buckle cascade drag droop ebb flag flop gravitate lapse lessen pitch recede regress relapse slope spin subside topple totter trail trip wane

break down cave in drop down fold up hit the dirt keel over nose-dive take a header tip over

ascend climb go up raise rise scale

develop enlarge expand extend grow increase