refers to a woman who is infatuated or lovesick

can mean a foolish or dreamy woman

बेवकूफ या सपनीली महिला

English Usage: Her friends used to tease her, calling her a dewani for her daydreaming.

Hindi Usage: इसके लिए उसके दोस्तों ने उसे दीवानी कहकर चिढ़ाया।

to be infatuated or obsessed with someone

to go crazy or lose sanity due to love

प्यार में पागल हो जाना

English Usage: He claimed he would dewani if she ever left him.

Hindi Usage: उसने कहा कि अगर वह कभी उसे छोड़ देंगी तो वह पागल हो जाएगा।