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1. Promise solemnly and formally
   "I pledge that I will honour my wife";
   - plight [archaic]
    
2. Pay (an amount of money) as a contribution to a charity or service, especially at regular intervals
   "I pledged $10 a month to my favourite radio station";
   - subscribe
    
3. Propose a toast to
   "Let us pledge the birthday girl!";
   - toast, drink, salute, wassail [archaic]
    
4. Give as a guarantee
   "I pledge my honour"
    
5. Bind or secure by a pledge
   "I was pledged to silence"

1. A deposit of personal property as security for a debt
   "his saxophone was in pledge"
    
2. Someone accepted for membership but not yet fully admitted to the group
    
3. A drink in honour of or to the health of a person or event
   - toast
    
4. A binding commitment to do, give or refrain from something
   "signed a pledge never to reveal the secret";
   - assurance

Derived forms: pledging, pledges, pledged

Type of: assure, bind, charge, commitment, consign, dedication, donate, drink, fellow member, fete, fête, hold, honor [US], honour [Brit, Cdn], member, obligate, oblige, promise, reward, security interest

Encyclopedia: Pledge