expression, noun which may take the genitive case particle 'no'
completely normal; very ordinary; totally unremarkable
Emphasizes that something is utterly ordinary, with no special or unusual features. Often used in casual conversation.
His day was completely normal.
That's a very ordinary occurrence.
Standard spelling using the adverb ごく (極) and the noun 普通.
Kanji spelling for ごく; less common than the kana form but still seen.
Combination of the adverb ごく (極, 'extremely') and the noun 普通 ('normal, ordinary'). The exact historical derivation is straightforward.