complex
WordReference English Thesaurus © 2026
Sense: Adjective: complicated
Synonyms:
complicated Collocations, intricate Collocations, convoluted, involved Collocations, byzantine, elaborate Collocations, knotty, tangled Collocations, labyrinthine
Antonyms:
simple Collocations, understandable Collocations, plain Collocations, apparent Collocations, easy to understand, uncomplicated, clear Collocations, direct Collocations
Sense: Adjective: difficult
Synonyms:
difficult Collocations, hard Collocations, tricky Collocations, challenging Collocations, tough Collocations
Sense: Adjective: composed of several parts
Synonyms:
composite Collocations, compound Collocations, compounded, multifaceted, many-sided, many-faceted, multiplex, multifarious
Antonyms:
Sense: Noun: obsession
Synonyms:
Sense: Noun: facility
Synonyms:
facility Collocations, center Collocations, centre , building Collocations, establishment Collocations, venue Collocations, hall Collocations, unit Collocations
Sense: Noun: sth made of many parts
Synonyms:
system Collocations, web Collocations, conglomerate, network Collocations, collection Collocations, composite Collocations
Antonyms:
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'complex' also found in these entries (note: many are not synonyms or translations):
abstract
- abstruse
- advanced
- baggage
- block
- combined
- complicated
- compound
- confusing
- conglomerate
- development
- devious
- difficult
- elaborate
- facility
- fancy
- hang-up
- hard
- installation
- intricate
- involved
- mystique
- network
- over one's head
- paranoia
- perplexed
- resort
- sophisticated
- syndrome
- system
- tissue
- tricky
