1. Adverb (fukushi)

   surely; undoubtedly; almost certainly; most likely (e.g. 90 percent)

   Usually written using kana aloneOnomatopoeic or mimetic word

   でもよー、オラのおとうさんは良い気しねーよ、きっと。

2. sternly; severely

   Usually written using kana aloneOnomatopoeic or mimetic wordesp. キッと

3. having no slack; rigid; stiff; tight

   Usually written using kana aloneOnomatopoeic or mimetic word

4. suddenly; abruptly; instantly

   Usually written using kana aloneOnomatopoeic or mimetic wordArchaic

Also written 急度【きっと】kitto