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on the sly

see definition of on the sly
  • as insurreptitious
  • as inunderground
  • as insubterrestrial
  • as insecretly
  • as incovertly
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Synonyms for on the sly

adj sneaky, secret

Antonyms for on the sly

  • aboveboard
  • forthright
  • honest
  • open
  • public
  • truthful
  • authorized
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

More words related to on the sly

covertly

adverb. clandestine, underhandedly

secretly

adverb. in hidden manner

subterrestrial

adjective. underground

surreptitious

adjective. sneaky, secret

underground

adjective. secret, subversive
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.