1.
not particularly, not really
Used with negative verbs to indicate that something isn't special or significant. Often conveys indifference.
別に is typically used with negative predicates to mean 'not particularly' or 'nothing special.' When used alone as a response (別に), it can sound dismissive or indicate indifference - similar to 'whatever' or 'not really.' The kanji 別 means 'separate/different'; 別に literally suggests 'as something separate/special.'