Of inferior quality and Spur-of-the-moment

Spur-of-the-moment and of inferior quality are semantically related. In some cases you can replace phrase "Spur-of-the-moment" with "Of inferior quality", this phrases are similar.

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

Of inferior quality and spur-of-the-moment are semantically related. Sometimes you can use "Of inferior quality" instead an adjective phrase "Spur-of-the-moment".