How many letters does the top answer for “belonging or relating to winter; wintry; winterish. sir t. browne.” have?

The most common answer is hibernal (8 letters).

Crossword clue: belonging or relating to winter; wintry; winterish. sir t. browne.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

hibernal 8 letters web-def

characteristic of or relating to winter