also: たんびに
each time; every time; whenever
Used after a verb or noun to express that something happens on every occurrence of that action or event. Often translated as 'whenever' or 'each time'.
Every time I see her, my heart flutters.
Every time I move, my belongings increase.
Whenever I listen to this song, I remember my hometown.
Every time I see my grandmother, she asks if I'm doing well.
都度 is a more formal, often business-style synonym for 度に, commonly seen in set phrases like その都度.
の度に attaches only to nouns (Xの度に), while 度に can follow both nouns and dictionary-form verbs (X度に), making it more flexible.
度に attaches to a verb or clause to mean 'every time X happens', whereas 度々 is a standalone adverb meaning 'often, repeatedly' with no preceding clause required.
every time one sees; whenever one looks at
Standard kanji spelling, though It is usually written in kana.
Emphatic or colloquial variant; less common than たびに.
Derived from the noun 度 (たび, 'time, occasion') combined with the particle に. The reading たんびに is a colloquial variant with an inserted ん for emphasis.