

静かな部屋でゆっくり寝てください。
病院の中は静かですね。
家の近くは静かですか。
"しずかな(静かな)" is in the lesson "Health" (Level 26), along with 12 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.