noun
perfect attendance (no lateness); never being late
Used for a record of zero lateness over a period, such as a school term or work evaluation. Often appears in contexts like 無遅刻賞 (perfect attendance award).
彼は一年間無遅刻で表彰された。
He was commended for having no lateness for a whole year.
今月は無遅刻を達成できた。
I managed to achieve zero lateness this month.
遅刻 is the act of being late; 無遅刻 is the state or record of having no lateness.
Compound of 無 (mu, 'without') and 遅刻 (chikoku, 'lateness'). The exact historical derivation is uncertain, but the word follows a common pattern of negating a noun with 無-.