не обратил внимания

didn't pay attention

→ не
phrase Rare #29,180
didn't pay attention Used for a masculine subject in the past tense. Usually followed by на + accusative when specifying what was ignored.
RU: Я не обратил внимания на этот знак.
EN: I didn't pay attention to that sign.

Том не обратил внимания на мои слова.

Tom didn't pay attention to my words.

А я и не обратил внимания.

And I didn't even notice.

— Женщины на грани нервного срыва (1988)

Ты не обратил внимания.

You weren't paying attention.

Я не обратил внимания на то, что они говорят.

I didn't pay attention to what they were saying.