Snappy /ˈsna-pē/ adj.  

Definition: The word snappy is an adjective we use in the English language to describe a person’s demeanor or a particular style of dress. We use snappy informally to represent the characteristics of a person with a sour or unpleasant demeanor.

When used to describe personal characteristics, a snappy person is short-tempered and speaks harshly or quickly without thinking. Snappy is also used to delineate a stylish dresser who is neat in their fashion. It can also mean quick-witted and sassy.

Etymology: We find the first recorded use of the word snappy in the early 1800s. It was used in 1825 to describe a person who was quick and energetic. The word snappy shows up again in the late -18th century around 1871, meaning clever and smart. Toward the end of the 18th-century, the word took on its current meaning, representing neat and stylishly elegant clothing styles.

In a Sentence

The CEO of the company was a snappy dresser who always wore high-end suits to work.

His personality was snappy when he came down with the flu.

Teenagers often make snappy remarks about their parents when they feel stressed.

Synonyms 

Irritable, Sharp

Antonyms 

Dowdy, Affable