The idiom "come rain or come shine" originated from the English language and is used to express unwavering commitment or dedication regardless of the circumstances or challenges faced. It is mainly used to convey the idea of remaining steadfast and resolute, whether it be in fulfilling a promise, completing a task, or maintaining loyalty. The phrase signifies a determination to persevere through both favorable and unfavorable conditions.

What is the origin of the idiom "come rain or come shine" and when to use it?

come rain or come shine

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(to|until) the bitter end

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to [get|take] the bit between {one's} teeth

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to [go] down (swinging|fighting)

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to [grit] {one's} teeth

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to [keep] {one's} [head] above water

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to [keep] {one's} chin up

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to [live] to (fight|see) another day

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to [push] it

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to [put] up a fight

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to [stand|hold] {one's} ground

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by hook or by crook

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come hell or high water

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come what may

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in the teeth of {sth}

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(last|final) resort

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The idiom "the courage of one's convictions"  is believed to have originated as a translation of the French expression "le courage de son opinion" ("the courage of his opinion"), dating from the mid-19th century. It is used to emphasize the strength of character required to uphold one's beliefs, even when faced with challenges or resistance.

What is the origin of the idiom "the courage of one's convictions" and when to use it?

the courage of {one's} (own|) convictions

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dead set

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to [keep] it up

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to [mean] business

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Explore English idioms regarding persistence with examples like "come rain or come shine" and "mean business".

Persistence

English Idioms for "Persistence"