Definition
In a loose or relaxed way, without tension or firmness.
Example
The rope hung slack after the weight was removed.
Conversation

Did you notice how the banner hangs so slack at the event?

Yeah, it looks like it needs some tightening up.

I wonder if they even checked it before putting it up.

Probably not! It definitely gives a laid-back vibe though.
Synonyms & Antonyms
Definition
To become loose or less tight; to not be firm or tense.
Example
The rope began to slack after the weight was removed.
Tense Forms
Past: slacked
Past Participle: slacked
Conversation

I noticed you've been kind of slack with your assignments lately.

Yeah, I just can't find the motivation right now.

Maybe you need to set some goals to stop being so slack about it.
Definition
A state of being loose or not tight, often referring to a lack of tension in something like a rope or a period of inactivity.
Example
There was some slack in the rope, allowing the boat to move freely.
Conversation

Have you noticed any slack in the schedule lately?

Yeah, it seems like things have slowed down a bit this week.

I guess it's just one of those periods of slack before the busy season starts.
Definition
To make something less tight or to reduce its tension or speed.
Example
He decided to slack the rope to give the boat more room to move.
Tense Forms
Past: slacked
Past Participle: slacked
Conversation

Hey, could you help me slack this rope a bit?

Sure, just pull it a little to make it looser.

Thanks! I always forget how to slack it properly.
Root Explanation
Slack → The word originates from Old English 'slæc', meaning loose or negligent. It describes a state of being loose or not tight, often implying a lack of effort or diligence.
Memory Tip
Think of something that is 'loose' or 'not tight' — that's why slack means to be relaxed or negligent.
Visually Confused Words
sack
lack
unslack
soulack
swack
stack
spack
snack