一応
just in case; more or less, for what it's worth
一応 + action / statement
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一応 is one of the most common hedging words in Japanese, with two main uses.
Just in case: doing something as a precaution, even if it may not be needed: 一応、傘を持っていこう, "I'll take an umbrella, just in case". It often pairs with ておく: 一応確認しておきます.
More or less, for what it's worth: a modest or reserved statement, admitting it's not perfect: 一応、完成しました, "it's more or less finished"; 料理は一応できます, "I can cook, after a fashion".
It softens what you say and avoids sounding boastful or overconfident, which is why Japanese speakers use it so often.
Examples
一応、傘を持っていこう。
I'll take an umbrella, just in case.
一応、完成しました。
It's more or less finished.
一応大学は卒業しました。
I did graduate from university, for what it's worth.
一応、確認しておきます。
I'll check, just to be sure.
料理は一応できます。
I can cook, after a fashion.