どうせ
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Meanings
Adverb
1. in any case; regardless; either way; after all; no matter what; anyway (indicates inevitability of outcome, resignation or scorn)
2. since it makes no difference anyway (you might as well ...); since it won't change the outcome; if you are doing it regardless (followed by a conditional, or as ~...だから)
Examples13
If I'm going to have a wedding ceremony, I want it to be the best ever so I have no regrets!
If you do it at all, do it well.
You're only foolin' round.
If you do it at all, try to do it well.
At any rate, if you learn English, study it thoroughly.
I daresay you are going to go no matter what.