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Definitions

once

[wuhns] / wʌns /
ADJECTIVE
in the past; occurred one time only
Synonyms
STRONGEST
already before earlier formerly previously
STRONG
erstwhile late
WEAK
back back when bygone in the old days in the olden days in times gone by in times past long-ago old on one occasion once only once upon a time one one time before one time previously only one time quondam sometime this time time was whilom
ADVERB
in the past; occurred one time only
Synonyms
STRONGEST
already before earlier formerly late previously
STRONG
erstwhile
WEAK
a single time at one time away back back back when but once bygone heretofore in the old days in the olden days in times gone by in times past long ago old on one occasion once only once upon a time one one time before one time previously only one time quondam sometime this time time was whilom
Antonyms
STRONGEST
currently future later presently

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.

Now Iran says that during the ceasefire it will once again allow ships to use the Strait, as long as their movements are coordinated with the Iranian military.

From BBC • Apr. 8, 2026

So did the checkpoints manned by armed men which had spread throughout the city in recent weeks, with only barriers and signs remaining on the roadside where they once stood.

From Barron's • Apr. 8, 2026

Huge gaps remain between the Iranian and U.S. positions, including on the issue of Hormuz, a lifeline for the Gulf where one-fifth of the world’s oil and gas once passed.

From The Wall Street Journal • Apr. 8, 2026

The once reticent Lopes also showed leadership qualities as early as 1976, when a throw by new Dodgers outfielder Dusty Baker had missed the cutoff man.

From Los Angeles Times • Apr. 8, 2026

I cringe seeing that, once again, the stack of bills exceeds the height of the other piles.

From "Red Flags and Butterflies" by Sheryl Azzam