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1. Concede the existence, reality or truth of
   "She acknowledged that she might have forgotten"; "she was the last to acknowledge the mistake";
   - admit
    
2. Report the receipt of
   "The program committee acknowledged the submission of the authors of the paper";
   - receipt
    
3. Express recognition of the presence or existence of, or acquaintance with
   "She acknowledged his compliment with a smile"; "it is important to acknowledge the work of others in one's own writing"; "He never acknowledges his colleagues when they run into him in the hallway";
   - notice
    
4. Express obligation, thanks, or gratitude for
   "We must acknowledge the kindness she showed towards us";
   - recognize, recognise [Brit]
    
5. Accept as legally binding and valid
   "acknowledge the deed"
    
6. Accept (someone) to be what is claimed or accept his power and authority
   "The Crown Prince was acknowledged as the true heir to the throne";
   - recognize, recognise [Brit], know

Derived forms: acknowledged, acknowledges, acknowledging

Type of: accept, adjudge, communicate, declare, give thanks, hold, pass, pass along, pass on, put across, react, reply, respond, thank

Encyclopedia: Acknowledge