Difficult and Viscous

Difficult adjective - Requiring considerable physical or mental effort.

Viscous and difficult are semantically related. In some cases you can use "Viscous" instead an adjective "Difficult".

Nearby Word: difficulty

Viscous adjective - Being of a consistency that resists flow.

Difficult and viscous are semantically related. Sometimes you can use "Difficult" instead an adjective "Viscous".

Nearby Words: viscid, viscosity, viscously