せん
専
もん
門
がい
外

takes genitive case の, noun

  1. outside of one's area of expertise, outside one's field.

Variations

Pronunciation Kanji Kana Is Common
せん
専
もん
門
がい
外
 専門外 せんもんがい

Contained Kanji Breakdown

specialty, exclusive, mainly
セン　もっぱ.ら (6th, N2)
ten fields
one, one radical (no.1)
イチ　いっ　ひと- (1st, N5)
wherefore, a reason
ユウ　ユ　ユイ (3rd, N3)
day, sun, Japan
ひ　にっ　ニチ (1st, N5)
number one, line, rod radical (no. 2)
コン　シ　ジョ
measurement, tenth of a shaku, a little
スン　す　みき (6th, N1)
gate, counter for cannons
モン　かど　と (2nd, N2)
outside
ガイ　そと　はず.す (2nd, N5)
evening
ゆう　セキ　ゆ (1st, N4)
divining, fortune-telling, divination or katakana to radical (no. 25)
ボク　うらな.う　うらない (Kentei Pre-1)