Warm
い adjective
This is a single kanji with an い on the end, meaning you know it's probably an adjective. What's the adjective form of warm? It's warm.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
Touch something that's warm... too warm! You pull your hand back and go "AH ta-ta! (あたた). People make this noise when they touch something that's hot, I hear. It's almost like saying "hot hot hot" while dropping the "h" sound.
People often pronounce this as あったかい, especially in casual, spoken Japanese. The "correct" reading is still あたたかい though, so keep that in mind when you're trying to type the kanji or taking an important test!
何か温かいものが飲みたいなぁ。
I want to drink something warm.
初心者なので、どうか温かい目で見まもってください。
I'm a beginner, so please go easy on me.
「デザートに温かいアイスクリームはいかがですか？」 「いいえ、もう結構です。」
"Would you like some warm ice cream for dessert?" "No, we’re all set."