Blithe – Showing a casual, cheerful indifference (lack of interest), seen by others as irresponsible or even callous

(Pronounced blahyth)

To remember the definition of the word blithe, use the following mnemonic:

Being lithe (blithe) meant she could do all the ballet moves better than the rest, but she showed a lack of interest by studying her phone during the lessons, and just smiled when one girl broke her leg. 

Examples of blithe in a sentence

Her blithe view of her failing grades made her parents furious. 

He came across as being very blithe in his interview so was not offered the job. 

His blithe attitude towards his finances had landed him in serious debt.