complicated

adjective

com·​pli·​cat·​ed ˈkäm-plə-ˌkā-təd 

1

: consisting of parts intricately combined

a complicated recipe

complicated machinery

2

: difficult to analyze, understand, or explain

a complicated issue

his absurdly complicated life

complicatedly adverb

complicatedness noun

Synonyms of complicated

• complicate
• intricate
• complex
• sophisticated

Choose the Right Synonym for complicated

complex, complicated, intricate, involved, knotty mean having confusingly interrelated parts.

complex suggests the unavoidable result of a necessary combining and does not imply a fault or failure.

a complex recipe

complicated applies to what offers great difficulty in understanding, solving, or explaining.

complicated legal procedures

intricate suggests such interlacing of parts as to make it nearly impossible to follow or grasp them separately.

an intricate web of deceit

involved implies extreme complication and often disorder.

a rambling, involved explanation

knotty suggests complication and entanglement that make solution or understanding improbable.

knotty ethical questions

Examples of complicated in a Sentence

The game's rules are too complicated.

The machine has a complicated design.

Recent Examples on the Web

And yet as the series expands from and twists around its simple horror concept (a wedding at the groom-to-be’s family house in the woods is fated for a titular dark catastrophe), Morrone’s performance as Rachel is able to shoulder the weight of quite a bit of backstory and a complicated endgame. —Joe Reid, Vulture, 29 May 2026

In any event, the direction of travel remains clear, even if the path remains complicated. —Justin Worland, Time, 29 May 2026

Sifting Out the Solution Since receiving his doctorate from the University of Cambridge in 2000, Chan had been developing and refining ways to compress complicated quantum states by focusing only on their most important configurations. —Quanta Magazine, 29 May 2026

Northwest Fort Worth and the Eagle Mountain area Northwest Fort Worth, including the area around Eagle Mountain Lake, sits in a slightly more complicated school zone. —Lauren Jarvis-Gibson, Fort Worth Star-Telegram, 29 May 2026

Word History

Etymology

from past participle of complicate entry 1

First Known Use

1656, in the meaning defined at sense 1

Rhymes for complicated

• abdicated
• abrogated
• acclimated
• activated
• actuated
• adumbrated
• advocated
• aggravated
• aggregated
• agitated
• allocated
• alternated

Kids Definition

complicated

adjective

com·​pli·​cat·​ed ˈkäm-plə-ˌkāt-əd 

1

: consisting of many combined parts

complicated machinery

2

: difficult to analyze, understand, or explain : complex

complicatedly adverb

complicatedness noun

Medical Definition

complicated

adjective

com·​pli·​cat·​ed

of a bone fracture

: characterized by injury to nearby parts