(つい)

つい
noun
pair, couple, set of two
1. pair, couple, set of two
Two things that go together as a matching set.
These vases are sold as a pair.
I can't find the matching sock.
I displayed the pair of folding screens.
I lost one of the matching pair of earrings.

(つい) refers to two things that form a matching pair or set. It's different from 二つ(ふたつ) (two items) because it emphasizes that the items belong together.

COMMON USES:

  • (つい)で: as a pair, in pairs
  • (つい)の~: a pair of ~
  • (つい)になる: to form a pair

SIMILAR WORDS:

  • ペア: pair (loanword, often for people)
  • (くみ): set, pair (also for people/things working together)
  • 双子(ふたご): twins

NOTE: As a prefix, (たい)~ means 'versus' or 'against' (e.g., (たい)日本(にほん) = versus Japan).