Lightnesses, noun plural of lightness. Synonyms in the same form.
Nimbleness
nimblenesses, agilities, legerities
Elation
elations
Levity
levities, airinesses, livelinesses, buoyancies, volatilities, inconstancies, flightinesses
Other
lights, eases, weightlessnesses, illuminations, levitations, facilities
All synonyms for lightness →