“To suit one's own convenience” in Japanese
Short answer
To suit one's own convenience in Japanese is “得手勝手” (etekatte). Full meaning: self-willed, (doing or saying things) to suit one's own convenience.
Other ways to say “To suit one's own convenience” in Japanese
勝手気まま
kattekimama self-willed, (doing or saying things) to suit one's own convenience, oblivious to the convenience of others
気まま勝手
kimamakatte self-willed, (doing or saying things) to suit one's own convenience
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