Serious-minded and Stick-in-the-mud

Serious-minded adjective - Acting with or showing thought and good sense.

Stick-in-the-mud and serious-minded are semantically related. In some cases you can use "Stick-in-the-mud" instead an adjective phrase "Serious-minded".

Stick-in-the-mud adjective - (used pejoratively) out of fashion; old fashioned.

Serious-minded and stick-in-the-mud are semantically related. Sometimes you can use "Serious-minded" instead an adjective phrase "Stick-in-the-mud".