In the sentence:


What does こした mean? Is this 越す or 鼓する or something other?

And does まあいいや mean "well" or "whatever"?

1 Answer 1


For the first part, こした is the past tense / completed aspect of the verb 越【こ】す. In your sample text, this is part of a set construction: ~[する]に越【こ】したことはない.

Some dictionary entries:

For the second part, yes, まあ basically means "well,..." and いいや parses out as basically "I guess it's good". As a whole, "well, yeah, okay then..."

  • 1
    Thank you for your explanation. I saw ~にこした事はない for the first time. Gonna check it out. Jsho doesn't say anything about it.
    – SkillGG
    Apr 23, 2019 at 19:32
  • 1
    @SkillGG Jisho does have something about it: jisho.org/search/…
    – Ringil
    Apr 23, 2019 at 21:50
  • Sorry. I had to miss it, when I was searching for it it didn't appear. I don't know why. Now it does :) Maybe I misspelled it. My fault. Again. Thank you!
    – SkillGG
    Apr 24, 2019 at 5:59

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