(たが)

おたがい
noun, adverb
each other, mutual
1. each other, one another
Refers to a reciprocal relationship between two or more parties.
To respect each other's opinions.
We try to understand each other.
We acknowledge each other's strengths.
Consider each other's positions.
2. mutual, reciprocal
Used adverbially to describe actions done by both parties.
Let's help each other.
(たが)(さま)です
We're in the same boat. / It's mutual.
Common fixed expression
Let's cooperate with each other.
We mutually trust each other.
We keep in touch with each other.
Let's both do our best.

COMMON PATTERNS:

  • (たが)いに (mutually - adverbial use)
  • (たが)(さま) (we're even/mutual - set phrase used when both parties share a burden)
  • (たが)いの〜 (each other's ~)

Note: The お prefix is standard and rarely omitted; (たが)い alone sounds unnatural in most contexts.

USAGE:
(たが)(さま) is a polite expression acknowledging that both parties are equally affected or responsible. It's commonly used as a humble response to apologies or thanks.

Compare with 相互(そうご) (mutual/reciprocal), which is more formal and used in written/official contexts.