unsociably
/ˌʌnsəʊˈsaɪəbli/Definitions
1. adverb
in a way that is unfriendly or uninterested in other people; in a socially isolated manner.
“She had become unsociably withdrawn after the loss of her loved one.”
2. adverb
in a way that is not conducive to social interaction or friendship.
“He worked unsociably long hours and rarely took breaks.”