What does fall back mean?
Fall back means An act of falling back..
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/ˈfɔːl.bæk/ · noun
An act of falling back..
A failure of one of the rocket's first-stage engines just after liftoff would result in a destructive pad fallback.
The black hole formed as a result of fallback of ejecta onto the neutron star initially created by the supernova explosion.
As a fallback, I suppose we can use typewriters if the word processing system fails.
Particle size distributions of fallback and ejecta were determined principally by mechanical sieving and weighing.
a fallback plan
Use fall back when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Fall back means An act of falling back..
Common synonyms include ebbing, recession, retreat, back-up.
The opposite depends on the specific sense.
A failure of one of the rocket's first-stage engines just after liftoff would result in a destructive pad fallback.
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