1.
reserve; spare
Something kept in case of need; a backup or extra supply.
USAGE: Used as both a noun and の-adjective to indicate something extra, in reserve, or preliminary.
COMMON COMPOUNDS:
- 予備校 (prep school, cram school for university entrance)
- 予備選挙 (primary election)
- 予備軍 (reserve forces)
- 予備費 (reserve fund)
- 予備知識 (background knowledge)
- 予備日 (alternative date)
USAGE PATTERN:
- 予備の + noun (spare X, reserve X)
- 予備 + noun (preparatory X)