Intermediate (B1)
IPA: /ˈhiːdləsnəs/
KK: /ˈhidləsnəs/
Definition
The quality of not paying attention or being careless about something important.
Example
His heedlessness led to several mistakes in the project.
Conversation

I noticed you were driving a bit fast yesterday.

Yeah, I guess I was being a little heedlessness about the speed limit.

It's easy to forget those things when you're in a hurry.

True, I should pay more attention next time to avoid any trouble.
Synonyms & Antonyms
Synonyms
inattention
carelessness
thoughtlessness
Antonyms
attention
care
consideration
Root Explanation
Heedlessness is formed from "heed" (from Old English "hēdan", meaning to take care or pay attention) and "-lessness" (meaning without). The word describes a state of being without care or attention.
Memory Tip
Think of 'heed' as paying attention, and '-lessness' means without. So, heedlessness means being without attention or care.
Visually Confused Words
seedlessness
needlessness
headlessness
creedlessness
cheerlessness
huelessness
eyelessness
endlessness