A really fast thesaurus... with lots of synonyms.
On the sly has 9 synonyms. The top synonyms for on the sly are surreptitious, smoothly, slick, secretly, secret, private, knowingly, incognito and 1 more. Another word for on the sly is surreptitious. Browse the full list below.
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| Random | DefinitionA common synonym for on the sly is surreptitious. Other synonyms include smoothly, slick, secretly, secret.
On the sly has 9 synonyms listed on Thesaurasize.
(v): slyly, in an inconspicuous manner, so as not to be seen
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