adj
Uncommon
loco
LOH-koh
Loco (adj) means Crazy or out of one's mind (informal). Example: “He went completely loco when he heard the news.”
adj
1
Crazy or out of one's mind (informal).
"He went completely loco when he heard the news."
"You'd be loco to turn down that offer."
noun
1
A poisonous rangeland plant (of the genus Astragalus or Oxytropis) that causes a form of madness in grazing animals when eaten.
"Cattle that graze on loco can start staggering and behaving erratically."
How to use loco
Learner’s notesIn plain EnglishCasual slang for "crazy" — also the name of a poisonous plant that sends grazing animals a bit mad.
When to use it
Informal; common in American English, often used half-jokingly.
Common pairings
go loco
drive someone loco
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Word forms
- Plural
- locos, locoes
- Third person singular
- locos
- Past tense
- locoed
- Comparative
- more loco
- Superlative
- most loco
Fill the gap
Can you complete this real example?
He went completely _____ when he heard the news.
Etymology
Borrowed from Spanish loco, "crazy" or "mad."
Synonyms
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Related words
Rhymes for loco
See all rhymes for loco →Frequently asked questions
What does “loco” mean?
The word “loco” means crazy or out of one's mind (informal). In plain terms, casual slang for "crazy" — also the name of a poisonous plant that sends grazing animals a bit mad.
How do you pronounce “loco”?
“Loco” is pronounced LOH-koh (/ˈləʊ.kəʊ/ in IPA).
How do you use “loco” in a sentence?
Here is “loco” used in a sentence: “He went completely loco when he heard the news.”
What part of speech is “loco”?
Depending on how it is used, “loco” can be an adjective and a noun.
Where does the word “loco” come from?
The word “loco” comes from Spanish. Borrowed from Spanish loco, "crazy" or "mad.".
Is “loco” a common word?
“Loco” is an uncommon word in modern English.
How many meanings does “loco” have?
“Loco” has 2 distinct senses listed in this dictionary. The most common is: crazy or out of one's mind (informal).
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