retroactively
🇺🇸
/ˌretrəʊˈæktɪvli/
🇬🇧
/ˌretrəʊˈæktɪvli/
adverb
R
applying to times in the past as well as now
The new tax law will be applied retroactively, affecting all transactions since last year.
新しい税法は遡及的に適用され、昨年からのすべての取引に影響を与えるでしょう。
translation
遡及的に