lark around

to behave in a silly way because you think it is funny:

https://dictionary.cambridge.org/ja/dictionary/english/lark-around

hoodwink ごまかす　だます

erasure 抹消

ruse たくらみ

apartheid la pa:r.tat/ 

pacifist 平和主義　反戦争

cavalry 騎兵隊

pull the plug on やめる　打ち切る