1. Promise solemnly and formally
   "I pledge that I will honour my wife";
   - plight [archaic]
    
2. Give as a guarantee
   "I pledge my honour"
    
3. Bind or secure by a pledge
   "I was pledged to silence"
    
4. 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
    
5. Propose a toast to
   "They pledged the newlyweds";
   - toast, drink, salute, wassail [archaic]

1. A binding commitment to do, give or refrain from something
   "signed a pledge never to reveal the secret";
   - assurance
    
2. A deposit of personal property as security for a debt
   "his saxophone was in pledge"
    
3. Someone accepted for membership but not yet fully admitted to the group
   "The fraternity pledge had to complete several tasks before becoming a full member"
    
4. A drink in honour of or to the health of a person or event
   "They raised their glasses in a pledge to the newlyweds";
   - toast

Derived forms: pledged, pledging, pledges

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