yesterseason means A past or prior season, last season; an earlier or previous period of time. Lexicurio rates it Rare gem — a strength score of 84 out of 100.
Why “yesterseason” is a great word
YESTERSEASON — [Noun] A past or prior season, or an earlier, distinct period of time now concluded. From the combining form yester- (meaning "of yesterday" or "past") + season (meaning "a period of the year" or "a time"). Unlike "yesteryear," which denotes the previous calendar year, or "previous season," a literal and unadorned phrase, yesterseason carries an antique and wistful resonance for a bygone chapter. It is the particular scent of rain on hot pavement that belonged solely to last summer, the faded pattern on a linen dress worn only in a certain season's heat, or the exact chill of a winter dusk from a childhood now irretrievable—a word for the ghost of a specific climate, both meteorological and emotional, sealed and set apart from the general flow of memory.
Etymology
From yester- + season.
noun
- A past or prior season, last season; an earlier or previous period of time.“Dared try fly, we, these impassible trees, whose drive-capturing crests communicate failed shots to yesterseason's leafy cache [...]”