lesser UK /ˈlɛsə/US /ˈlɛsɚ/adjective 2phrases 1 adjective2 •Of two (or, rarely, more than two) things: the smaller in size (littler), in value, in importance etc. •that which is of lesser size, quality, degree, or significance; of lower status, importance, or rankThe larger Sand Hill Cranes increasingly do not migrate, but almost all lesser ones do.Between the two men, he was clearly the lesser one. Phrases with lesser lesser of two evilsThe least harmful or unpleasant of two undesirable alternatives.