IPA: /kəˈmɪzəˌreɪtɪŋli/
KK: /kəˈmɪzəˌreɪtɪŋli/
In a manner that expresses sympathy or sorrow for someone else's misfortune.
She spoke commiseratingly to her friend after hearing about his loss.
Commiseratingly → It is formed from "com-" (meaning together) and "miserari" (meaning to pity or feel sorry for). The suffix "-ly" indicates the manner of the action. Thus, "commiseratingly" means in a manner that expresses pity or sympathy together with others.
Think of feeling sorry for someone 'together' ('com-') — that's why commiseratingly means expressing sympathy in a shared way.