Dullness and Slackness

Dullness noun - The quality or state of lacking intelligence or quickness of mind.

Slackness and dullness are semantically related in sluggishness topic. In some cases you can use "Slackness" instead a noun "Dullness", when it comes to topics like languor, torpor.

Nearby Words: dull, dulling, dullish

Slackness noun - Failure to take the care that a cautious person usually takes.

Dullness and slackness are semantically related in sluggishness topic. Sometimes you can use "Dullness" instead a noun "Slackness", if it concerns topics such as languor, torpor.

Nearby Words: slack, slacken, slackening