It's Merriam-Webster's Word of the Day for July 31st.
Today's word is impeccable, spelled I-M-P-E-C-C-A-B-L-E.
Impeccable is an adjective.
It describes that which is free from fault, error, or blame.
It's a synonym of the word flawless.
Here's the word used in a sentence from Glamour by Emily Tannenbaum.
Megan Markle turned 42 years old on August 4th and her style is as impeccable as ever.
The word impeccable has been used in English since the 16th century.
It comes from the Latin word impeccabilis,
a combination of the Latin prefix in meaning not and the verb peccare meaning to sin.
Its original meaning hewed close to its root.
Impeccable meant not capable of sinning or liable to sin.
It has a rare but pleasingly logical antonym in the word peccable, meaning liable or prone to sin.
This root has other descendants in English.
There's the noun peccadillo, meaning a slight offense, the adjective peccant,
meaning guilty of a moral offense or simply faulty,
and the noun peccowee, which in Latin literally means I have sinned.
but in English refers to an acknowledgement of sin.
Nowadays,
impeccable is more commonly used in the secular sense to mean flawless as an impeccable taste in music,