I confessed my love to Koichi, but he totally rejected me.
Viet beat the yokai easily.
I submitted a holiday request to my boss but it was flatly rejected.
Giving one kick is certainly an effective (if brutal) way to flatly reject or to brush aside something or someone. That one kick can also be used to easily beat anyone.
This is a jukugo word that uses the on'yomi readings of the kanji. First up, notice that いち changes to いっ. And since you haven't learned the on'yomi for the kanji 蹴 (kick) yet, here's a mnemonic to help you:
When you're planning to flatly reject someone, one kick is all you need. Before you do that, be absolutely sure to put your shoe (しゅう) on first.