Synonyms of thorough

thorough

adjective

ˈthər-(ˌ)ō 

1

as in complete

having no exceptions or restrictions

had thorough access to the files for her research

Synonyms & Similar Words

• complete
• simple
• unconditional
• sheer
• utter
• pure
• absolute
• total
• definite
• very
• perfect
• thoroughgoing
• outright
• damn
• damned
• profound
• clean
• regular
• deadly
• real
• huge
• categorical
• fair
• downright
• unadulterated
• consummate
• unmitigated
• endless
• dreadful
• unqualified
• constant
• stark
• crashing
• plumb
• blank
• genuine
• straight-out
• all-out
• flat-out
• unalloyed
• out-and-out
• flat
• rank
• blooming
• authentic
• horrible
• arrant
• bodacious
• terrible
• dead
• perpetual
• eternal
• veritable
• stone
• extreme
• classic
• unremitting
• terrific
• extraordinary
• unrestricted
• confirmed
• main
• hopeless
• supreme
• undying
• superlative
• habitual
• inveterate
• frightful
• surpassing

Antonyms & Near Antonyms

• uncertain
• questionable
• doubtful
• qualified
• restricted
• dubious
• equivocal

2

as in detailed

including many small descriptive features

thorough analysis of the current crisis in Asia

Synonyms & Similar Words

• detailed
• full
• comprehensive
• accurate
• elaborate
• descriptive
• particular
• particularized
• circumstantial
• complete
• minute
• entire
• blow-by-blow
• specific
• vivid
• exhaustive
• precise
• graphic
• itemized
• explicit
• copious
• thoroughgoing
• panoramic
• inclusive
• encyclopedic
• in-depth
• abundant
• correct
• distinct
• specified
• enumerated
• exhausting
• listed
• delineated
• omnibus
• exact
• replete
• picturesque
• numerated
• inventoried
• sharp
• inclusionary
• mapped (out)

Antonyms & Near Antonyms

• summary
• concise
• brief
• compendious
• succinct
• short
• pithy
• compact
• terse
• crisp
• cut
• abbreviated
• trimmed
• curtailed
• vague
• abridged
• ambiguous
• general
• sketchy
• shortened
• pruned
• broad
• indeterminate
• nebulous
• overall
• nondescript
• nonspecific
• unspecified
• bird's-eye

3

as in extensive

trying all possibilities

a thorough search of the office that turned up no evidence of wrongdoing

Synonyms & Similar Words

• extensive
• comprehensive
• complete
• exhaustive
• sweeping
• thoroughgoing
• systematic
• full-scale
• clean
• total
• methodical
• wide
• all-out
• out-and-out
• in-depth
• general
• broad
• inclusive
• wide-ranging
• far-reaching
• global
• no-holds-barred
• unhampered
• unrestrained

Antonyms & Near Antonyms

• random
• haphazard
• cursory
• desultory
• aimless
• superficial
• shallow
• limited
• hit-or-miss
• narrow
• slipshod
• restricted

4

as in comprehensive

covering everything or all important points

a very thorough textbook on respiratory disorders

Synonyms & Similar Words

• comprehensive
• extensive
• full
• panoramic
• complete
• exhaustive
• inclusive
• encyclopedic
• in-depth
• global
• compendious
• general
• all-inclusive
• omnibus
• universal
• embracive
• broad
• vast
• all-embracing
• cyclopedic
• broad-gauge
• overall
• large
• wide
• cover-all
• all-in
• sweeping
• wide-ranging
• far-reaching
• far
• inclusionary
• catholic
• cosmic
• indiscriminate
• encyclical
• blanket
• unrestricted
• panoptic
• grand

Antonyms & Near Antonyms

• limited
• specialized
• narrow
• precise
• restricted
• specific
• individual
• exact
• circumscribed
• singular
• incomplete
• sketchy
• patchy

Example Sentences

Recent Examples of thorough

Some hotels distinguish between light housekeeping, which may include making beds and replacing towels, and more thorough cleaning. — Ashley Lynch, Miami Herald, 16 Oct. 2026

This is a risk that even a thorough pre-release security testing can’t close. — Klaudia Zaika, Forbes.com, 16 Oct. 2026

Six Flags Over Georgia reopened Friday evening, as officials pledged a thorough investigation into what caused an Atlanta educator to be ejected from a popular roller coaster midride. — Shaddi Abusaid, AJC.com, 16 Oct. 2026

This configuration allows the bristles to make contact with the scalp, assisting in thorough detangling and ensuring no section is missed, even with voluminous locks. — Laura Sandroni, Vogue, 16 Oct. 2026