to relax and enjoy yourself freely
リラックスして自由に楽しむ
"At the party, everyone let their hair down."
"パーティーで、みんなが リラックスして楽しんだ。"
to separate from a main route or line of development
a decision where people are divided in opinion
knowledgeable from studying rather than experience
to discuss something without addressing it directly
to commit an illegal act
a small problem that is exaggerated
