マイペース

まいぺーす
na-adjective
at one's own pace; unhurried and unaffected by others
personalitydescriptive
1. doing things at one's own pace and in one's own way, regardless of others
A Japanese coinage from 'my' and 'pace': going about things at one's own speed and manner without being swayed by the people around. Mildly admiring (steady, unflappable) or mildly critical (oblivious, slow), depending on tone. Used as a な-adjective (マイペースな(ひと)) and with で (マイペースで(すす)める).
(かれ)マイペースな(ひと)だ。
He does things at his own pace.
マイペース勉強(べんきょう)(つづ)けている
I keep studying at my own pace.
No matter how much everyone around her hurries, my sister always goes at her own pace.

A 和製英語(わせいえいご) (Japanese-made English) word. 'My' here means anyone's own: (かれ)マイペースだ says he goes at his own pace, not mine.

Common collocations

Usage

As a description of character it is one of the standard Japanese personality labels, alongside 真面目(まじめ) and のんびり; whether it is praise or a complaint depends on the speaker.

Similar words