noun which may take the genitive case particle 'no', noun
Used as a no-adjective or noun to describe something habitual, routine, or normal. Often appears in formal expressions like 平素の努力 (one's usual efforts) or 平素の行い (one's everyday conduct).
Adverbial use meaning 'under normal circumstances' or 'as a rule'. Common in formal or written contexts, such as business letters and speeches.
His everyday efforts bore fruit.
A person with good everyday conduct is trusted.
Ordinarily, I arrive at the office at 9 a.m.
Thank you very much for your continued patronage.
平素 is the very formal, business-letter equivalent of 普段, used in set phrases like 平素はお世話になっております.
Compound of 平 (flat, calm, ordinary) and 素 (element, plain). The combination conveys the idea of 'ordinary and unadorned', referring to one's usual state or everyday affairs.