An idiom is a fixed expression whose overall meaning cannot be understood from the literal meanings of its individual words. In translation and localization, idioms occur frequently in marketing copy, dialogue, and UI microcopy, and they usually require a culturally appropriate equivalent expression or a clear paraphrase in the target language rather than a word-for-word rendering that would sound unnatural.
Idioms appear in slogans, game dialogue, video scripts, and app error messages where a literal translation would sound unnatural or misleading. Translators identify the intended meaning, then choose a target-language idiom with similar impact, or they replace it with plain language when no equivalent expression exists in the target culture.
The most common mistake is translating idioms literally, which can create confusing or comic text in the target language. Another error is using a target-language idiom that has the wrong connotation or register, so the text may often be fluent but convey a different emotional tone or subtle cultural message.
For creative and consumer content the failure mode is flatness, not inaccuracy — and flatness passes an accuracy check. Terms here also carry technical constraints (reading speed, character budgets) that are part of the brief.
Angel Translation locks terms like this into a project terminology base before expert review begins, so the same source term resolves to the same target term across every document in a submission — and stays consistent in the next revision. See the 8-step AI + expert workflow.
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