Spur-of-the-moment and Unpracticed

Spur-of-the-moment adjective - Made or done without previous thought or preparation.

Unpracticed and spur-of-the-moment are semantically related. In some cases you can use "Unpracticed" instead an adjective phrase "Spur-of-the-moment".

Unpracticed adjective - Not having had extensive practice.

Spur-of-the-moment and unpracticed are semantically related. Sometimes you can use "Spur-of-the-moment" instead an adjective "Unpracticed".