Laborious vs Monotonous - What's the difference?

As adjectives the difference between laborious and monotonous

is that laborious is requiring much physical effort; toilsome while monotonous is having an unvarying tone or pitch.

* labourious * laborous * labourous

(en adjective)

Requiring much physical effort; toilsome.

Let us face it, our lives are miserable, laborious , and short.

Mentally difficult; painstaking

Industrious.

* Dryden

All with united force combine to drive / The lazy drones from the laborious hive.

* (requiring effort) painstaking, toilsome, worksome

* laboriously

(en adjective)

having an unvarying tone or pitch

tedious, repetitious or lacking in variety

* monotonic * samely