()()

つりあう
verb, godan
to be balanced; to be well-matched; to be proportionate
1. to be balanced; to be well-matched; to be proportionate
For two things to be in proper balance or proportion with each other. Often used to describe whether people, things, or amounts are suitably matched.
値段(ねだん)品質(ひんしつ)()()っている。
The price and quality are well balanced.
収入(しゅうにゅう)支出(ししゅつ)()()わない。
Income and expenses don't balance out.
あの二人(ふたり)はお(たが)いに()()った()いカップルだと(おも)う。
I think those two are a well-matched couple.

()()う is an intransitive godan verb. The noun form is ()()い (balance, proportion).

ASPECT (ている):
()()っている describes the state of being in balance.

PARTICLE PATTERNS:

  • AとBが()()う (A and B are balanced)
  • ~に()()う (to match/be proportionate to)

COMMON COLLOCATIONS:

  • ()()いが()れる (to achieve balance)
  • ()()いが()れない (to be out of balance)
  • 身分(みぶん)()()わない (not befitting one's status)

RELATED EXPRESSION:
()()わぬは不縁(ふえん)のもと is an old saying meaning "an unequal match leads to a broken relationship."