lock horns
Meaning
To enter into a direct conflict or heated argument; to clash strongly with someone.
Origin
From the image of two horned animals (e.g., deer, goats, bulls) fighting by hooking their horns together, used metaphorically for people or groups in conflict.
Notes
Suggests a strong, direct clash (argument, rivalry, or power struggle). Often implies both sides are stubborn and the conflict is head-on.
Examples
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The two candidates locked horns during the televised debate.
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I locked horns with my manager over the project timeline.
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The neighbors have been locking horns about the fence for months.
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Scientists locked horns over how to interpret the new data.
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If we lock horns on every small issue, we’ll never finish this plan.
Grammar & Usage Notes
Usually used as a verb phrase: "lock horns (with someone)". Can inflect (locked/locking). Often followed by "over" + issue (e.g., "lock horns over funding").
Synonyms
- clash
- butt heads
- square off
- go head-to-head
Antonyms
- see eye to eye
- agree
- get along