How to Say "mother city" in Spanish
The Spanish word for “mother city” is “metrópoli” — C1 level.
English → SpanishC1
nounC1formal
the central state of a colony

Examples
Las noticias tardaban meses en llegar desde la metrópoli a las colonias.
News took months to arrive from the mother city to the colonies.
The Plural Form
The plural of 'metrópoli' is 'metrópolis'. Notice that the word looks almost the same but adds an 's'.
Related Translations
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