On the sly
On the sly adverb - In a furtive manner.
O and on the sly are semantically related. In some cases you can use "O" instead an adverb phrase "On the sly".
O
O noun - The numerical symbol 0 or the absence of number or quantity represented by it.
On the sly and o are semantically related. Sometimes you can use "On the sly" instead an adverb "O".
Mutual synonyms
Cite this Source
O and On the sly. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/on_the_sly/o
On the sly & O. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/on_the_sly/o>.
O or On the sly. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/on_the_sly/o.