conspiratorial

adjective

con·​spir·​a·​to·​ri·​al kən-ˌspir-ə-ˈtȯr-ē-əl 

: of, relating to, or suggestive of a conspiracy

conspiratorially

kən-ˌspir-ə-ˈtȯr-ē-ə-lē 

adverb

Examples of conspiratorial in a Sentence

She gave me a conspiratorial smile across the table.

His voice became low and conspiratorial.

Recent Examples on the Web

Over the course of the novel, each Flynn girl is suspended from school at least once for some screwball infraction, including spreading conspiratorial theories about covert surveillance operations in town, punching another kid in the face, and preparing to commit an act of domestic terrorism. —Hannah Gold, New Yorker, 21 Jan. 2026

And that kind of thinking can fuel conspiratorial theories about why something did or did not happen. —Bobby Allyn, NPR, 17 Jan. 2026

So, too, is the idea that an inordinate number of these conspiratorial events come true. —Niela Orr, Vulture, 13 Jan. 2026

So that fundamental feeling of powerlessness in the face of larger, ominous and obscure forces doesn’t feel very crazy or conspiratorial to me. —Patrick Brzeski, HollywoodReporter, 13 Jan. 2026

Word History

First Known Use

1855, in the meaning defined above

Rhymes for conspiratorial

• ambassadorial
• combinatorial
• gladiatorial
• gubernatorial
• inquisitorial
• mediatorial
• multifactorial
• prosecutorial
• supratentorial
• arboreal
• armorial
• authorial

Kids Definition

conspiratorial

adjective

con·​spir·​a·​to·​ri·​al kən-ˌspir-ə-ˈtōr-ē-əl 

-ˈtȯr-

: of or relating to a conspiracy

conspiratorially

-ē-ə-lē 

adverb

Legal Definition

conspiratorial

adjective

con·​spir·​a·​tor·​i·​al kən-ˈspir-ə-ˈtōr-ē-əl 

: of, relating to, or suggestive of a conspiracy

conspiratorially adverb