thorough

Leaving nothing unchecked

Thorough means complete and careful, with attention to every detail.

A thorough investigation examines all evidence.

A thorough cleaning reaches every corner.

The word implies not just completion but conscientiousness—doing something thoroughly means doing it right, leaving nothing overlooked or half-done.

comprehensive

complete

Lacking nothing, fully done

extensive · wide-ranging · all-encompassing · holistic · sweeping · all-inclusive · full-scale · encyclopedic · systematic · methodical

meticulous

careful

Exercising caution and attention

fastidious · methodical · painstaking · particular · exacting · scrupulous · conscientious · punctilious · detail-oriented · finicky

ethical

principled

Having strong moral beliefs

upright · righteous · ethical · virtuous · just · fair · sincere · honest · truthful · trustworthy

complete

absolute

Total, without qualification

utter · outright · unmitigated · unconditional · unreserved · pure · sheer · downright · perfect · consummate

Categories
Opposites
completeness/depth

thoroughsuperficial

Lacking depth or substance

cursory · partial · incomplete · sketchy · shallow

care/attention

thoroughcareless

Inattentive, prone to mistakes

haphazard · sloppy · slapdash · slipshod · negligent

Phrases
Family

thoroughly, thoroughness, thoroughfare, thoroughbred, thoroughgoing

Familiarity
Top 10,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G