Ho-hum and Laborious

Ho-hum adjective - Causing weariness, restlessness, or lack of interest.

Laborious and ho-hum are semantically related. in dull topic. In some cases you can use "Laborious" instead an adjective phrase "Ho-hum", when it comes to topics like irritating.

Laborious adjective - Involved in often constant activity.

Ho-hum and laborious are semantically related. Sometimes you can use "Ho-hum" instead an adjective "Laborious".