Whimsical /(h)wimzik(ə)l/ adj.

Definition:  The word whimsical refers to exciting, appealing, amusing, and playful qualities. It can also apply to how people behave, as in a “whimsical” fashion. Whimsical can describe the quirky or out-of-this-world qualities of a person, place, or thing. The term can also refer to unexpected behaviors, erratic behaviors, and unpredictability in fashion or dress.

A person who they say is whimsical is seen as a free spirit—someone who marches to the beat of their own drummer. A whimsical person may dress in wild, bright, or unusual colors. In most cases, the term describes positive yet uncommon or outrageous behaviors. Although unexpected, to experience something or someone whimsically is akin to having a “happy accident.”

Etymology: We can trace the word whimsical as far back as the early 16th century. They derived it from the noun “whim-wham” in its shortened form. Whim-wham was originally used to describe brightly decorated objects and trinkets. The word was shortened to whim but retained its spontaneous qualities.

In a Sentence

The circus performers wore delightfully whimsical outfits.

We look forward to the comedian’s whimsical performance.

Her personality has always been whimsical and free-spirited.

Synonyms 

Fanciful, Playful

Antonyms 

Boring, Drab