Definition of 十年一日 (じゅうねんいちじつ)

じゅうねんいちじ

十年一日

じゅうねんいちじつ

juunen-ichijitsu

noun
without intermission for ten (long) years, with constancy of purpose for ten (long) years, in the same old rut for years on end(yojijukugo)
Other readings:
十年一日【じゅうねんいちにち】
Related Kanji
ten
year, counter for years
one, one radical (no.1)
day, sun, Japan, counter for days