More N1 vocabulary

• 増強ぞうきょうaugment; reinforce; increase
• ご馳走さまごちそうさまfeast
• 唱えるとなえるto recite; to chant; to call upon
• 見すぼらしいみすぼらしいshabby; seedy
• 共学きょうがくcoeducation
• 怠いだるいsluggish; feel heavy; languid; dull