Related words 頃ころ 頃 (ころ ) is a common suffix meaning 'around the time of' or 'approximately', while 頃おい (ころおい ) is a standalone noun meaning a specific time or period, and has a more literary feel.
時じ 代だい 時代 (じだい ) is the standard word for 'era' or 'period', used in both formal and everyday contexts. 頃おい is more limited to personal or nostalgic time references.
Written forms 頃ころ おい Usage 50%
Standard spelling for this word; the おい is written in kana to distinguish from the common suffix 頃 (ころ /ごろ ).
ころおい Usage 50%
比ころ おい
Variant kanji spelling; rarely used.
頃ころおい
Abbreviated spelling; easily confused with the common suffix 頃 (ころ /ごろ ).
比ころおい
Abbreviated variant; very rare and ambiguous.
Etymology Derived from 頃 (ころ , 'time') + おい (an old suffix possibly related to 生い 'growth' or 追い 'pursuit', but the exact derivation is uncertain). The word is now considered somewhat archaic.
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