Blunder vs Peccadillo - What's the difference?

As nouns the difference between blunder and peccadillo

is that blunder is a clumsy or embarrassing mistake while peccadillo is a small flaw or sin.

is to make a clumsy or stupid mistake.

(wikipedia blunder)

(en noun)

A clumsy or embarrassing mistake.

* (error) blooper, boo-boo, error, faux pas, fluff, flub, fumble, gaffe, goof, lapse, mistake, slip, stumble, thinko

(en verb)

To make a clumsy or stupid mistake.

to blunder in preparing a medical prescription

To move blindly or clumsily.

* Goldsmith

I was never distinguished for address, and have often even blundered in making my bow.

* Dryden

blunders on, and staggers every pace

To cause to make a mistake.

* Ditton

To blunder an adversary.

To do or treat in a blundering manner; to confuse.

* Stillingfleet

He blunders and confounds all these together.

* ----

(wikipedia peccadillo)

(en-noun)

A small flaw or sin.

A petty offense.