Today's Word

Deleterious

del-uh-TEER-ee-uhs

Definition

(adjective) Causing harm or damage, often in a subtle or unexpected way.

Example

Prolonged exposure to stress can have deleterious effects on your health.

Word Origin

Mid 17th century: from medieval Latin deleterius, from Greek dēlētērios ‘noxious’, from dēlētērios (related to destroy or *to hurt’).

Fun Fact

Deleterious is often used when something appears harmless but turns out to be damaging—like sugary drinks, misinformation, or prolonged noise. It’s not the loud crash—it’s the slow rot. You’ll find it in medical journals, legal decisions, and HR handbooks. It’s a favorite when talking about effects that are subtle, cumulative, and serious—without sounding dramatic.

Previous Words

Abate

Today's Word

Abate

uh-BAYT

Definition

(verb) To reduce in intensity, force, or amount; to become less severe or widespread.

Example

The protests didn’t end so much as abate — the crowds thinning gradually over three weeks until one morning the square was simply empty again.

Word Origin

Abate derives from the Old French abatre, meaning “to beat down” — built from a- (“to”) and batre (“to beat”), itself from the Latin battuere, meaning “to beat” or “to strike.” The same root gives us batter, battle, and combat — all words built around striking. The sense in abate is of something being beaten back, reduced, pushed down from its peak — not eliminated but diminished to something more manageable.

Fun Fact

In English law, abatement has a precise and ancient legal meaning — the right to remove a nuisance that affects one’s property or public space. The doctrine of abatement of nuisance dates to medieval common law and gives individuals and authorities the right to reduce or eliminate conditions that cause harm, from flooding to noise to unsafe structures. The legal phrase “abate a nuisance” has been used continuously in English courts for over six centuries — making abate one of the few words whose legal and everyday meanings have remained almost perfectly aligned across that entire period.

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Deleterious

Definition

Example

Word Origin

Previous Words

Abate

Abate

Definition

Example

Word Origin

Abate

Pugnacious

Vociferous

Dilatory

Resplendent