More N1 vocabulary

• 躊躇うためらうto hesitate
• じゃん拳じゃんけんrock-scissors-paper game
• 養成ようせいtraining; development
• 増しましextra; additional; less objectionable; better; preferable
• 他意たいill will; malice; another intention; secret purpose; ulterior motive; fickleness; double-mindedness
• エアメールair mail