nailed down

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assured adj.
definitive adj.
exact adj.
immobile adj.
incontrovertible adj.
open and shut/open-and-shut adj.
secure adj.
stationary adj.

ADJECTIVE

assured

Synonyms

STRONGEST

guaranteed settled sure

STRONG

cinched clear-cut clinched confirmed decided racked sealed secure set

WEAK

beyond doubt definite in the bag indubitable irrefutable made certain on ice positive pronounced sewed-up surefire undoubted unquestionable

Antonyms

STRONGEST

indefinite uncertain unsure

STRONG

undecided vague

WEAK

doubted doubtful

ADJECTIVE

definitive

Synonyms

STRONGEST

actual categorical clear-cut conclusive decisive definite exhaustive precise reliable specific ultimate unambiguous

WEAK

absolute closing complete completing concluding determining downright ending express final finishing flat out last limiting perfect plain real settling straight out terminal terminating

Antonyms

STRONGEST

ambiguous false imprecise indefinite inexact questionable uncertain vague

WEAK

incomplete inconclusive interim temporary unreliable

ADJECTIVE

exact

Synonyms

STRONGEST

accurate correct definite explicit identical literal perfect rigorous specific true

STRONG

clear clear-cut express right

WEAK

bull's-eye careful dead on distinct downright faithful faultless methodical nice on the button on the money on the numbers on-target orderly particular precise right on sharp unequivocal unerring veracious verbal verbatim

Antonyms

STRONGEST

flawed imprecise inaccurate indefinite inexact loose obscure uncertain vague wrong

STRONG

ambiguous fuzzy

WEAK

approximate careless incorrect uncareful unreliable

ADJECTIVE

immobile

Synonyms

STRONGEST

immovable stagnant static stationary

WEAK

anchored at a standstill at rest frozen immobilized immotile nailed pat quiescent rigid riveted rooted stable steadfast stiff still stock-still stolid unmovable unmoving

Antonyms

STRONGEST

mobile moving unfixed

WEAK

movable

ADJECTIVE

incontrovertible

Synonyms

WEAK

accurate authentic certain established incontestable indisputable indubitable irrefutable no mistake no two ways about it positive sure sure thing surefire uncontestable undeniable unequivocable unquestionable unshakable

Antonyms

WEAK

changeable controvertible questionable uncertain variable

ADJECTIVE

open and shut/open-and-shut

Synonyms

WEAK

apparent assured cinched clear clear as a bell clear-cut conclusive cut and dried distinguishable easy evident explicit glaring guaranteed iced in the bag indisputable obvious ordinary plain routine self-evident self-explanatory sewn-up simple straightforward undeniable undisguised unmistakable

ADJECTIVE

secure

Synonyms

STRONGEST

able confident easy reliable solid stable strong sure

STRONG

assured balanced cinch determined established firm reassured settled sound steady

WEAK

absolute at ease carefree conclusive hopeful in the bag locked on on ice resolute sanguine self-assured self-confident steadfast sure thing tried-and-true unanxious undoubtful well-founded

Antonyms

STRONGEST

uncertain unreliable unsure wobbly

STRONG

irresolute unsound unstable wavering

WEAK

indefinite undecided

ADJECTIVE

stationary

Synonyms

STRONGEST

immobile motionless parked stagnant static

WEAK

anchored at a standstill inert moored nailed pat permanent stable standing stock-still unmoving

Antonyms

STRONGEST

active mobile moving

WEAK

restless unfixed unsteady

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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nailed down

Yet his attitude of constant haggling over everything that isn’t nailed down, and some things that were supposed to be, isn’t helpful.

From The Wall Street Journal ● Aug. 19, 2026

And some of the loose language, in both the MoU and the current statement, could be nailed down.

From Slate ● Aug. 10, 2026

"If you're Steve Borthwick and you haven't got the centres nailed down, I can see it," he added.

From BBC ● May 18, 2026

A veteran prediction trader known as Domer External link says neither firm has nailed down the resolution process.

From Barron's ● May 12, 2026

A swirling vortex had opened in the center of the game’s monitor, and it was sucking in bits of trash, paper cups, bowling shoes—everything that wasn’t nailed down.

From "Ready Player One: A Novel" by Ernest Cline

nailed down

Example Sentences

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