Meaning of 表向理由 in Japanese

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Definition of 表向理由

おもて(omote) 【表】

(n) surface
この表から食べたいものを選べます。
You may choose what to eat from this list.
face (i.e. the visible side of an object)
この紙はどちらが表だか見分けがつかない。
I cannot tell which is the right side of this paper.
front (of a building, etc.); obverse side (i.e. "head") of a coin
私はその問題がわかっていない。裏と表の区別もついていない。
I don't understand the problem; I could make neither head nor tail of it.
outside; exterior
一体何が今晩表であんなひどい音をたてているのか見当もつきません。
I don't know what kind of creature is making such a terrible noise outside tonight.
appearance
public
内面の欠点は必ず表に現れる。
An inner defect never fails to express itself outwardly.
first half (of an innings); top (of an inning)
cover (for tatami mats, etc.)
(comp) foreground

ひょう(hyou) 【表】

りゆう(riyuu) · わけ(wake) 【理由】