- Today's Word
Pernicious
per-NISH-us
Definition
(adjective) Causing harm in a gradual or subtle way.
Example
Unchecked misinformation can have a pernicious effect on public trust.
Fun Fact
Back in the 15th century, pernicious was a word used to describe deadly disease or outright destruction—especially during outbreaks and plagues. But over time, its meaning shifted from the obvious to the insidious. Today, it’s used to describe things like toxic relationships, systemic inequality, or manipulative rhetoric—all of which may not seem dangerous at first, but quietly cause real harm over time.
(adjective) Severe or strict in manner or appearance; having no comforts or luxuries; pleasingly simple and unadorned.
The monastery’s austere design — bare stone walls, minimal furniture, and no decoration — was intentional, meant to keep the monks focused on contemplation rather than comfort.
Austere comes from the Greek austēros, meaning “harsh” or “rough to the taste,” originally used to describe the bitter, drying quality of unripe fruit. The word passed into Latin as austerus and then into Old French before arriving in English in the 14th century. Its early use referred to physical sensations before expanding to describe strict, unadorned behavior and environments.