To Cry
godan verb
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means cry so the verb vocab version is to cry.
なく
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. If you remember the kanji reading you'll have no problem with this word.
そんなことで泣くなよ。
Don't cry over something like that.
ヤバイ。うれしすぎて、泣きそう。
Aww. I'm so happy I'm about to burst into tears!!
クビになっちゃって泣いてます。早く次の会社、見つけなきゃ。
I got fired and I'm crying. I need to find another company quickly.