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Jyutping zi6 daa2
Pinyin zì dǎ

Definitions (CC-CEDICT)
  1. (coll.) since
Definitions (Wiktionary)
  1. prep, colloquial
    from; since
    (syn.) 打从, 自从, 打從, 自從
  2. verb
    to hit oneself
Examples (粵典–words.hk)
  1. Cantonese
    佢讲嘢成日自打嘴巴。
    佢講嘢成日自打嘴巴。
    keoi5 gong2 je5 sing4 jat6 zi6 daa2 zeoi2 baa1.
    • He's always contradicting himself.
  2. Cantonese
    你寄完电邮之后,再亲自打电话去问下对方收到未就实无死。
    你寄完電郵之後,再親自打電話去問下對方收到未就實無死。
    • After you sent you emails, call the recipients to see if they have received anything just to be sure.