SecDef

S1E1C3D2E1F4
/ˈsɛkˈdɛf/

noun

The United States Defense Secretary, the civilian head of the Department of Defense of the United States of America, a cabinet secretary.

Similar
Defense SecretarySecertary of WarSecretary of DefenseSec WarSec. WarSecWarSec.WarSoD
UncommonScrabble 12
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Meanings

SecDef1

nounSecDef (plural SecDefs)

plural SecDefs

  1. alternativeAlternative form of SECDEF

SECDEF2

nounSECDEF (plural SECDEFs)

plural SECDEFs · alternative SecDef · alternative Sec.Def. · alternative Sec. Def. · alternative Sec Def

  1. UStitlesgovernmentThe United States Defense Secretary, the civilian head of the Department of Defense of the United States of America, a cabinet secretary.

    Synonyms: Defense Secretary, Secertary of War, Secretary of Defense, Sec War, Sec. War, SecWar, Sec.War, SECWAR

Synonyms & antonyms

nounThe United States Defense Secretary, the civilian head of the Department of Defense of the United States of America, a cabinet secretary.

Similar
Defense SecretarySecertary of WarSecretary of DefenseSec WarSec. WarSecWarSec.WarSECWARSoDSODSoWSOWWar Secretary

Origin

Abbreviation of Secretary of Defense.

Full word history & related roots →
Cite this entry
APA

SecDef. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/SecDef

MLA

“SecDef.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/SecDef. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “SecDef,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/SecDef.

Source: SecDef on Wiktionary, CC BY-SA 4.0.