On the sly and Radical

On the sly adverb - In a furtive manner.

Radical and on the sly are semantically related. in secret topic. In some cases you can use "Radical" instead an adjective phrase "On the sly", when it comes to topics like underground.

Radical adjective - Being very far from the center of public opinion.

On the sly and radical are semantically related. Sometimes you can use "On the sly" instead an adjective "Radical".

Nearby Words: radically, radicalism, radicalize, radicalise, radicalised