

この漫画はとてもおもしろいです。
先生の話はおもしろいですね。
その映画、おもしろい?
"おもしろい" is in the lesson "Emotions" (Level 42), along with 11 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.