flat-out
- adverb (adv)
Meaning: at top speed
Synonyms:
all-out
all the way
at a good clip
for all one’s worth
full blast
head over heels
in full gallop
lickety-split
the whole nine yards
to the max
unrestrainedly
wide open
without reservation
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.