Adverbs Ending in SLY and Containing OS

This list gathers 19 English adverbs ending in SLY and containing OS, such as Grossly, Posthumously, Crossly, Preposterously, Ostentatiously, Prosperously and Purposelessly. Use the sorting controls below to organize entries by length, or consult our verb grammar guide to study adverb placement and -ly formation rules.

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Starts with C
2 words
crossly
costlessly
Starts with E
1 words
endosporously
Starts with G
1 words
grossly
Starts with O
3 words
ostentatiously
osseously
overprosperously
Starts with P
7 words
posthumously
preposterously
prosperously
purposelessly
pseudoprosperously
pseudosacrilegiously
pseudostudiously
Starts with S
2 words
supposititiously
suppositiously
Starts with U
3 words
unostentatiously
unprosperously
unpreposterously

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