Difficult and Humdrum

Difficult adjective - Requiring considerable physical or mental effort.

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

Nearby Word: difficulty

Humdrum adjective - Causing weariness, restlessness, or lack of interest.

Difficult and humdrum are semantically related. Sometimes you can use "Difficult" instead an adjective "Humdrum".