Deleterious

Deleterious

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

Craven

Today's Word Craven KRAY-vin Definition (adjective) Contemptibly lacking in courage;...

Read More

Upbraid

Today's Word Upbraid up-BRAYD Definition (verb) To scold or criticize...

Read More

Doleful

Today's Word Doleful DOHL-ful Definition (adjective) Expressing sorrow or sadness;...

Read More

Multitudinous

Today's Word Multitudinous mul-tih-TOO-dih-nus Definition (adjective) Very numerous; existing in...

Read More

Fulminate

Today's Word Fulminate FULL-mih-nayt Definition (verb) To express vehement protest...

Read More