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

Toddler boy, 17 months, carrying baby doll with pacifier in mouth. —Daniella Gray, MSNBC Newsweek, 3 Aug. 2025

The snaps show the baby sleeping with a blue pacifier in his mouth and swaddled in a baby blanket with his baby cap. —Raven Brunner, People.com, 20 July 2025

Colorado shared an image on social media of a young Ethan Holliday wielding a purple bat at Coors Field while sucking on a pacifier. —Charles Odum, Chicago Tribune, 14 July 2025

The proud mother of three also added a photo of the sleeping newborn in a white onesie with a blue pacifier in his mouth. —Kayla Grant, People.com, 3 July 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