外がい交こう弱じゃく勢せい
Meanings
Noun
1. outbreeding depression (Rare)
Kanji used
Composed of
外がい交こう
diplomacy; selling (e.g. door-to-door); canvassing
Noun
弱じゃく
a little less than; a little under; slightly fewer than; weakness; the weak; low (setting); -lower (seismic intensity)
Suffix
勢せい
strength; power; energy; military strength; army; (number of) troops
Noun