A formal label meaning the second item, party, or grade, often paired with 甲. Common in contracts and classification systems rather than ordinary conversation.
Used as 乙な for something tasteful, stylish, witty, or charmingly unusual. It has a somewhat old-fashioned or playful flavor, and can shade into 'peculiar' depending on context.
Slang abbreviation of お疲れ様 used to acknowledge someone's effort or thank them casually. It is very casual and especially common in messages, online communities, and among peers.
The same slang abbreviation can be used as a casual sign-off, like お疲れ様 said when leaving or ending an online session. The exact English translation depends on the situation.
