KO
Americannoun
verb (used with object)
verb
noun
Other Word Forms
Conjugated Forms
Present
-
have KO'edperfect
-
have KOedperfect
-
has KO'dperfect 3rd person singular
-
has KO'edperfect 3rd person singular
-
have KO'dperfect
-
has KOedperfect 3rd person singular
-
am KOingprogressive 1st person singular
-
have been KO'ingperfect progressive
-
KO'ingparticiple
-
have been KOingperfect progressive
-
KO'ssingular 3rd person
-
KOingparticiple
-
has been KO'ingperfect progressive 3rd person singular
-
has been KOingperfect progressive 3rd person singular
-
are KOingprogressive
-
is KOingprogressive 3rd person singular
-
is KO'ingprogressive 3rd person singular
-
are KO'ingprogressive
-
am KO'ingprogressive 1st person singular
Past
-
had KOedperfect
-
had KO'dperfect
-
had KO'edperfect
-
had been KOingperfect progressive
-
was KOingprogressive singular
-
KO'dsimple
-
KOedparticiple
-
were KO'ingprogressive plural
-
KO'dparticiple
-
KOedsimple
-
KO'edsimple
-
were KOingprogressive plural
-
had been KO'ingperfect progressive
-
KO'edparticiple
-
was KO'ingprogressive singular
Future
Etymology
Origin of KO
First recorded in 1920–25; initial letters of knock out
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.
I think if it's Wilder, it's a clean KO win.
From BBC • Apr. 1, 2026
During the past several years, Brush has suggested KO, UTZ and HSY in his stock newsletter, Brush Up on Stocks.
From MarketWatch • Feb. 7, 2026
Beverage giant Coca-Cola KO -0.43%decrease; red down pointing triangle , with its global footprint and growing focus on zero-sugar drinks and energy beverages, also fits the mold of a steady performer.
From The Wall Street Journal • Dec. 21, 2025
"We got Justin the good look and KO got the rebound and put it back."
From Barron's • Nov. 12, 2025
And you never want Daddy to go for the KO.
From "The Hate U Give" by Angie Thomas
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.
