- 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) Practicing severe self-discipline and avoiding all forms of indulgence, often for spiritual or philosophical reasons.
He adopted an ascetic lifestyle, giving up comforts and focusing on meditation, study, and simple living.
Ascetic comes from the Greek askētikos, meaning “practicing training or exercise,” originally used for athletes. Over time the term shifted toward spiritual discipline, describing people who trained their minds and bodies through restraint, simplicity, and renunciation of physical pleasures.