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Definitions

day-and-night

ADJECTIVE
around-the-clock
Synonyms
STRONGEST
continuous endless interminable never-ending nonstop ongoing perpetual relentless round-the-clock unending uninterrupted
WEAK
24/7 all day and all night at all times ceaseless constant eternal everlasting persistent timeless unceasing
Antonyms
STRONGEST
bounded ceasing completed discontinuous ending finished halting incontinuous intermittent interrupted stopping terminable transient
ADJECTIVE
ceaseless
Synonyms
STRONGEST
constant continual continuous endless incessant nonstop perpetual unceasing unending unremitting
WEAK
amaranthine eternal everlasting indefatigable interminable on a treadmill perennial round-the-clock uninterrupted untiring world-without-end
Antonyms
STRONGEST
broken ceasing completed discontinuous ending finished halting inconstant intermittent interrupted stopping temporary terminable terminating transient
WEAK
concluded infrequent irregular occasional
ADJECTIVE
continuous
Synonyms
STRONGEST
continued endless extended regular repeated stable steady unbroken unceasing uninterrupted
WEAK
connected consecutive everlasting interminable looped no end of no end to on a treadmill perpetual prolonged timeless undivided unfaltering
Antonyms
STRONGEST
broken discontinuous imbalanced intermittent unfixed unstable unsteady wobbly
WEAK
ceasing completed ending finished halting interrupted sporadic stopping
ADJECTIVE
incessant
Synonyms
STRONGEST
ceaseless constant continual continuous endless interminable nonstop perpetual relentless round-the-clock unceasing unending unrelenting unremitting
WEAK
eternal everlasting interminate monotonous timeless unbroken
Antonyms
STRONGEST
bounded ceasing completed discontinuous ending finished halting inconstant infrequent intermittent interrupted irregular merciful occasional stopping sympathetic temporary terminable terminating transient
WEAK
broken
ADJECTIVE
interminable
Synonyms
STRONGEST
boundless continuous endless eternal incessant limitless long-winded never-ending perpetual protracted
WEAK
boring ceaseless constant dragged out dull everlasting immeasurable interminate long long-drawn-out looped no end of no end to on a treadmill permanent spun out strung-out timeless unbound unceasing uninterrupted unlimited wearisome
Antonyms
STRONGEST
brief ceasing ending ephemeral halting intermittent interrupted limited stopping temporary terminable transient
WEAK
bounded finite
ADJECTIVE
unceasing
Synonyms
STRONGEST
ceaseless continual continuous endless eternal never-ending perpetual persistent relentless unending uninterrupted unyielding
WEAK
constant everlasting lasting nonstop permanent round-the-clock steady
Antonyms
STRONGEST
brief broken ceasing completed discontinuous ending ephemeral finished halting infrequent intermittent interrupted occasional stopping surrendering temporary terminable transient yielding

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.

Military transport helicopters flew overhead throughout the day and night.

From Salon • Apr. 6, 2026

Because mice sleep in short bursts throughout the day and night, they provided a detailed view of how growth hormone changes across sleep stages.

From Science Daily • Mar. 30, 2026

Sitting with friends, Muhammad Ali, 22, said that, despite the warplanes roaring over Baghdad day and night, the war hadn't affected him.

From Barron's • Mar. 14, 2026

Now they fire off messages from their phones and computers day and night.

From The Wall Street Journal • Mar. 11, 2026

Two representatives complained that they “were called up every half hour day and night so that they had no sleep.”

From "Votes for Women!" by Winifred Conkling

Vocabulary lists containing day-and-night

Continuous

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