1
: too great a dose (as of a therapeutic agent)
also : a lethal or toxic amount (as of a drug)
2
: an excessive quantity or amount
an overdose of fun
overdosed; overdosing; overdoses

transitive verb

: to give an overdose or too many doses to

intransitive verb

: to take or experience an overdose
usually used with on

Examples of overdose in a Sentence

Noun She died from a cocaine overdose.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
A little more than a year ago, his 39-year-old son, Adam Harrison, died from an accidental drug overdose. Kimi Robinson, USA TODAY, 14 Mar. 2025 The new evidence led the Elk Grove Police Department to reopen the fentanyl overdose death of Keanu Apodaca Young, 17, the release said. Ishani Desai, Sacramento Bee, 12 Mar. 2025
Verb
And now there’s evidence that people are overdosing on vitamin A probably because of the outbreaks and being misinformed. Bruce Y. Lee, Forbes.com, 5 Apr. 2025 Both overdosed on Fentanyl and Xylazine, a veterinary sedative often mixed with illicit drugs. Tanasia Kenney, Miami Herald, 17 Mar. 2025 See All Example Sentences for overdose

Word History

First Known Use

Noun

1700, in the meaning defined at sense 1

Verb

1700, in the meaning defined at transitive sense

Time Traveler
The first known use of overdose was in 1700

Browse Nearby Words

Cite this Entry

“Overdose.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/overdose. Accessed 21 Apr. 2025.

Kids Definition

overdose

2 of 2 verb
1
: to give an overdose or too many doses to
2
: to take or experience an overdose
overdosed on heroin

Medical Definition

overdose

1 of 2 noun
: too great a dose (as of a therapeutic agent)
an overdose of exposure to the sun Morris Fishbein
also : a lethal or toxic amount (as of a drug)

overdose

2 of 2 verb
overdosed; overdosing

transitive verb

: to give an overdose or too many doses to

intransitive verb

: to take or experience an overdose
usually used with on

More from Merriam-Webster on overdose

Last Updated: - Updated example sentences
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