Thesaurus.com
Dictionary.com
Showing results for nuclear. Search instead for nuclea.
Definitions

nuclear

[noo-klee-er, nyoo-, -kyuh-ler] / ˈnu kli ər, ˈnyu-, -kyə lər /
ADJECTIVE
central
Synonyms
STRONGEST
basic essential fundamental important key paramount pivotal significant
STRONG
cardinal center chief dominant interior intermediate leading master mean median middle midway primary prime radical ruling salient umbilical
WEAK
axial centric centroidal equidistant focal foremost inmost inner mid middlemost midmost omphalic outstanding overriding predominant
Antonyms
STRONGEST
additional auxiliary extra inessential insignificant minor nonessential secondary trivial unimportant unsubstantial
STRONG
exterior extreme inferior outer outside subordinate
WEAK
peripheral
ADJECTIVE
inner
Synonyms
WEAK
close constitutional essential familiar focal inherent innermore inside interior internal intestinal intimate intrinsic inward
Antonyms
WEAK
exterior external outer outside physical
ADJECTIVE
organic
Synonyms
STRONGEST
biological
STRONG
anatomical constitutional essential fundamental integral living necessary original primary prime primitive principal
WEAK
amoebic animate basal biotic cellular elemental inherent innate live plasmic structural vital
Antonyms
STRONG
accessory auxiliary extra inessential minor secondary trivial unimportant unnecessary
WEAK
inorganic man-made unnatural

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.

But Germany's government persuaded Siemens to withdraw over concerns about nuclear proliferation.

From Barron's • Apr. 4, 2026

User-friendly design can save lives by allowing for legibility and shared understanding, making it safer to run nuclear power plants, air traffic control towers, and robotic surgical systems.

From Slate • Apr. 4, 2026

The International Atomic Energy Agency - the UN's nuclear watchdog - said it had been informed of the strike and had expressed "deep concern".

From BBC • Apr. 4, 2026

Unlike Iran's Natanz uranium enrichment facility or the future Arak heavy water nuclear power plant, the Bushehr facility is not considered a proliferation risk.

From Barron's • Apr. 4, 2026

And that was a nuclear disaster of a whole different kind.

From "Meltdown" by Deirdre Langeland

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