independent clause
US /ˌɪndɪˈpendənt klɔːz/
UK /ˌɪndɪˈpendənt klɔːz/

1.
cláusula independiente, oración principal
a clause that can stand alone as a complete sentence, containing a subject and a predicate
:
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An independent clause expresses a complete thought.
Una cláusula independiente expresa una idea completa.
•
The sentence 'She sings beautifully' is an independent clause.
La oración 'Ella canta hermosamente' es una cláusula independiente.