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

The complaint claims that after Lipps was identified as a lead, Heck did not conduct a thorough investigation or find sufficient probable cause before requesting an arrest warrant. — Meredith Deliso, ABC News, 17 Sep. 2026

These can become a safety hazard if the mower turns them into projectiles, so a thorough raking before mowing is a good precaution. — Luke Miller, Better Homes & Gardens, 16 Sep. 2026

As with many a Mamdani initiative, the plan calls on the city to address the affordability of those modes — setting a goal of more affordable Citi Bike access and more thorough transit discounts for New Yorkers in need. — Evan Simko-Bednarski, New York Daily News, 15 Sep. 2026

After a thorough search of all buildings with police and K-9 units, officials say buildings were cleared of any real threat. — Jennifer Borrasso, CBS News, 14 Sep. 2026