To be very close friends
とても親しい友達である (totemo shitashii tomodachi de aru)
"They've been thick as thieves ever since childhood."
"彼らは子供の頃からとても親しい友達です。" (karera wa kodomo no koro kara totemo shitashii tomodachi desu)
to remove something, especially a layer, from a surface
To be extremely anxious or tense.
to pause and calm down before reacting in anger
There is no point in worrying about past mistakes.
to suspect something wrong or dishonest
to cause trouble or create a significant impact