nailed down
Made completely certain
Nailed down means secured or finalized.
To nail something down is to fix it firmly in place—literally with nails, or figuratively by settling details: We haven't nailed down a date yet, Let's nail down the specifics before we proceed.
Something nailed down is certain rather than vague or tentative.
Joined or held together
- anchoredFixed securely in position
- fixedRestored or immovable
- boltedFastened or fled suddenly
- clampedSecured by compression
latched · tethered · stapled · pinned · attached · affixed · screwed · riveted
Confirmed as accurate
- establishedFormally set up
- provenEstablished as fact
- finalizedMade permanent and complete
- settledNo longer in question
determined · definitive · substantiated · validated · authenticated · corroborated · documented · ascertained
fastened
Joined or held together
clamped · latched · tethered · stapled · pinned · attached · affixed · screwed · riveted · braced
verified
Confirmed as accurate
- establishedFormally set up
- provenEstablished as fact
- finalizedMade permanent and complete
settled · determined · definitive · substantiated · validated · authenticated · corroborated · documented · ascertained · demonstrated
- stillnessstillness, motionless, motionlessness, immobility, unmoving
- dependabilityreliable, dependable, trustworthy, trusted, steadfast
nailed downup in the air
Unresolved, awaiting determination
uncertain · undecided · unresolved · ambiguous · unsettled
nailed downloose
Not firmly secured
unfastened · unsecured · free · detached · unattached
down, nail, nails, downs, nailed, nailing, downed, downing, nailer