1
to disappear into;to be lost in;to slip into;to get mixed in among
私の手紙は郵送中にどこかに紛れてしまったに違いない。
My letter must have gone astray in the mail.
2
to do something under the cover of (confusion, etc.)
3
to be almost indistinguishable;to be confusingly similar
4
to be diverted from (negative emotions, etc.);to forget about
5
to be distracted by;to be too absorbed in