Humdrum and Worn-out

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

Worn-out and humdrum are semantically related. In some cases you can use "Worn-out" instead an adjective "Humdrum".

Worn-out adjective - Depleted in strength, energy, or freshness.

Humdrum and worn-out are semantically related. Sometimes you can use "Humdrum" instead an adjective phrase "Worn-out".