perplexing

Definitions

Completely baffling; very puzzling.

Difficult to understand or solve; complicated.

Examples

The sudden disappearance of the documents was truly perplexing to the entire investigation team.

She found his sudden change in behavior to be quite perplexing and difficult to understand.

The scientist faced a perplexing challenge when the experimental results contradicted all previous theories.

Synonyms

baffling confusing puzzling bewildering mystifying convoluted enigmatic

Antonyms

clear simple obvious straightforward understandable plain evident