sign/take the pledge

sign the pledge

To take an oath to abstain from drinking alcohol forever. My father was a monster to me and my brothers until he signed the pledge in the late '90s. I noticed Janet drinking 7-Up all night. She either signed the pledge, or she's pregnant.
See also: pledge, sign

take the pledge

To take an oath to abstain from drinking alcohol forever. My father was a monster to me and my brothers until he took the pledge about 10 years ago. I noticed Janet drinking 7-Up all night at the party. She's either taken the pledge, or she's pregnant.
See also: pledge, take
Farlex Dictionary of Idioms.

take the pledge

Fig. to promise to abstain from drinking alcohol. I'm not ready to take the pledge yet, but I will cut down. My aunt tried to get me to take the pledge.
See also: pledge, take
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

sign (or take) the pledge

make a solemn undertaking to abstain from alcohol.
See also: pledge, sign
Farlex Partner Idioms Dictionary

sign/take the ˈpledge

(old-fashioned) promise never to drink alcohol: He hasn’t been much fun since he took the pledge.In the nineteenth century there were anti-drinking campaigns, when people were encouraged to sign a promise (= a pledge) never to drink alcohol.
See also: pledge, sign, take
Farlex Partner Idioms Dictionary

take the pledge

tv. to promise to abstain from alcohol. I’m not ready to take the pledge yet, but I will cut down.
See also: pledge, take
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • sign the pledge
  • take the pledge
  • abstain from
  • abstain
  • Scout's honour
  • save (oneself) for marriage
  • Mother Monster
  • on the wagon, to be
  • be on the wagon
  • be/go on the wagon