Thesaurus.com
Dictionary.com
Definitions

redline

[red-lahyn, red-lahyn] / ˈrɛdˌlaɪn, ˈrɛdˈlaɪn /
VERB
differentiate
Synonyms
STRONGEST
comprehend discern discriminate extricate separate
STRONG
characterize contrast demarcate individualize individuate know mark sever severalize
WEAK
antithesize discrepate know what's what mark off set apart set off split hairs tell apart
Antonyms
STRONGEST
misinterpret mistake misunderstand
WEAK
allow associate confuse connect group leave link mix up
VERB
rate
Synonyms
STRONGEST
appraise assess calculate consider count deem determine estimate evaluate grade peg rank regard score
STRONG
adjudge admire apprise assay class esteem fix measure pigeonhole price reckon respect survey tab tag typecast valuate value weigh
WEAK
button down guess at put away put down as put down for relate to standard set at size up stand in with take one's measure think highly of
Antonyms
STRONGEST
disregard ignore
STRONG
condemn disbelieve dislike disrespect hate neglect scorn
WEAK
disqualify

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.

Its attorneys now use AI to redline new versions of contracts.

From The Wall Street Journal • Nov. 8, 2025

Kazakhstan's Rybakina, whose power from the baseline is among the very best when she finds her groove, continued to redline in the second set.

From BBC • Aug. 29, 2025

A lone rider leaves the redline at Union Station.

From Los Angeles Times • Jun. 20, 2025

“AI must be guided in a direction that is conducive to the progress of humanity, so there should be a redline in AI development — a red line that must not be crossed,” without elaborating.

From Seattle Times • Jan. 18, 2024

They were past redline now, flying at 220 miles per hour and in danger of ripping the plane’s wings off.

From "Mountain of Fire" by Rebecca E. F. Barone

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.