いっぱいいっぱい

Usually written in kana. Kanji spelling 一杯一杯

to the limit; to the fullest extent; absolutely the limit; the best one can do

Also written 一杯々々

Meanings

Na-adjective, Adverb, Noun
to the limit; to the fullest extent; absolutely the limit; the best one can do; breaking even
one cup after another; cup by cup

Example sentences

子供こどもの世話せわで一杯一杯いっぱいいっぱいだったんだ。

I had my hands full taking care of my own children.