fall out

phrasal verb
1
to become loose and drop
درآمدن, ریزش کردن, از جا در آمدن
2
if soldiers fall out, they leave their lines and move away
از صف خارج شدن, متفرق شدن
3
to have an argument with somebody so that you are no longer friendly with them
قهر کردن, بگومگو کردن