pacifier

noun

pac·​i·​fi·​er ˈpa-sə-ˌfī(-ə)r 

1

: one that pacifies

2

: a usually nipple-shaped device for babies to suck or bite on

Examples of pacifier in a Sentence

Recent Examples on the Web

In the photo, Sofia is slumped in her car seat, pacifier in her mouth and wearing pink pajamas and a coordinating pink hair bow. —Sabrina Weiss, PEOPLE, 24 Oct. 2025

Having been run out of the movie theater for entry without payment and refusing to go back to his abusive home, a 12-year-old boy (Miles Ekhardt) sucks fiercely on his emotional support pacifier while trying to hitchhike his way out of town. —Aramide Tinubu, Variety, 22 Oct. 2025

This washes, sanitizes, and dries bottles, pacifiers, and even pumping equipment hands-free. —Kate McGregor, Architectural Digest, 8 Oct. 2025

Screenshots from a September 12 TikTok video of a cleft palate puppy using a pacifier to mimic his nursing littermates. —Liz O'Connell, MSNBC Newsweek, 24 Sep. 2025

Word History

First Known Use

1533, in the meaning defined at sense 1

Rhymes for pacifier

• amplifier
• clarifier
• classifier
• gasifier
• magnifier
• modifier
• multiplier
• occupier
• purifier
• qualifier
• quantifier
• rectifier

Kids Definition

pacifier

noun

pac·​i·​fi·​er ˈpas-ə-ˌfī(-ə)r 

1

: one that pacifies

2

: a usually nipple-shaped device for babies to suck or bite on

Medical Definition

pacifier

noun

pac·​i·​fi·​er ˈpas-ə-ˌfī(-ə)r 

1

: a usually nipple-shaped device for babies to suck or bite on

2

: tranquilizer