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Synonyms

infra

1 American  
[in-fruh] / ˈɪn frə /

adverb

  1. below, especially when used in referring to parts of a text.

infra- 2 American  

  1. a prefix meaning “below,” used, with second elements of any origin, in the formation of compound words.

    infrasonic; infrared.
infra- 1 British  

prefix

  1. below; beneath; after

    infrasonic

    infralapsarian
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
infra 2 British  
/ ˈɪnfrə /

adverb

  1. (esp in textual annotation) below; further on

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of infra1

1730–40; < Latin infrā; under

Origin of infra-2

< Latin, representing infrā, adv. or preposition

Compare meaning

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“To date, we have not detected any material go-live constraint that would cause us to throttle-back our AI revenue estimates for the cloud infra providers.”

From Barron's • Oct. 22, 2025

The infra push is also something that will have long-term payoffs.

From BBC • Apr. 30, 2024

"The AI infra will enable it to provide accurate recommendations and cross sell products and services across its giant network of clients in retail, telecom, and financial space," he said.

From Reuters • Sep. 8, 2023

But loving is nothing if not embarrassing, its expressions always a little infra dig.

From Los Angeles Times • Oct. 5, 2022

Item ad idem, Exodi vicesimo primo: non facies tibi sculptile nec aliquam similitudinem, et infra, vicesimo quinto: Facies duo cherubim aurea.

From A History of The Inquisition of The Middle Ages; volume I by Lea, Henry Charles

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.