Home › Words › M › mainfallmainfallmainfall means an inclined surface of the ground.EtymologyFrom main + fall.nounAn inclined surface of the ground.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.sidehill 61% match — The side or slope of a hill; a sloping descent. vs mainfall →crossfall 60% match — Synonym of camber (“slope of a road”). vs mainfall →calade 59% match — A slope or declivity in a manège ground down which a horse is made to gallop, to give suppleness to its haunches. vs mainfall →declivant 59% match — Sloping. vs mainfall →downfault 59% match — A graben (area sunken relative to surrounding land). vs mainfall →hillslope 58% match — A slope of a hill. vs mainfall →inslope 58% match — A slope that is tilted towards a road. vs mainfall →downsteepy 58% match — Having a great declivity. vs mainfall →