Backup and Lock

Backup

Backup noun - A crowded mass (as of cars) that impedes or blocks movement.

Usage example: there was the inevitable backup of travelers trying to pass through airport security

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Lock and backup are semantically related. In some cases you can use "Lock" instead a noun "Backup".

Nearby Word: backing

Lock noun - One that is certain to succeed.

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Backup and lock are semantically related. Sometimes you can use "Backup" instead a noun "Lock".

Nearby Words: locked, lockup, locker, locket, lockout

old	old backup	old lock
good	good backup	good lock
physical	physical backup	physical lock
safe	safe backup	safe lock
Other adjectives: solid, proper, single, cheap, heavy, tough, little, telepathic, secret, flimsy, automatic, mechanical, mere, extra, magical.

You can compromise by having Layla/Marq do backup vocals instead, but this will later lock you out of a possible marriage as Layla/Marq will leave later.

Source: Video Game / Choice of Games
The flight director's heartbreaking words, "Lock the doors," are procedural to ensure that no one enters or leaves in such a crisis as data backup for an investigation immediately began.

Source: Mass "Oh, Crap!"
At the same time, since only one such expert can work on a lock at a time and it's rare that multiples need to be picked simultaneously, there's little reason to have more than one or two of them in any group (with the main argument for a second already being "as backup just in case").

Source: Master of Unlocking

Cite this Source

Lock and Backup. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/backup/lock

Backup & Lock. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/backup/lock>.

Lock or Backup. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/backup/lock.

Google Ngram Viewer shows how "backup" and "lock" have occurred on timeline