English
summerless
From summer + -less.
Formed from summer + -less
Proto-Indo-European *sm̥-h₂-ór-o-
Proto-Germanic *sumaraz
Proto-West Germanic *sumar
Old English sumor
Middle English somer
English summer
Today it means
adj Without a summer, or whose summer is considered lacking.
Language periods are conventional ranges, not dates for this word.
Etymograph / summerless