

新幹線の席は広くて快適です。
仕事用に快適な椅子がほしいです。
新しい家での生活は快適ですか。
"かいてきな(快適な)" is in the lesson "Adjectives 1" (Level 2), along with 15 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.