be mother

1.
British EnglishAmerican Englishgeneralneutralinformalliterary
- To perform the duties or role of a mother; to provide physical care, nurturing, and moral guidance to a child or dependent.
- To assume responsibility for the welfare, comfort, and daily needs of others in a way associated with maternal care.
2.
British EnglishAmerican Englishgeneralinformalcolloquial
- To act as a surrogate parent or as both mother and father; to take on multiple parental roles and responsibilities for someone who lacks them.
3.
British Englishgeneralinformalcolloquial
- To adopt a hostessly or maternal demeanour in a social setting, providing comfort, domestic attention, or supervisory care to guests or a group.

Examples:

EN: That will be mother.
ES: - No. Será mamá.
EN: Well, now. Shall I be mother?
ES: Bien, ¿les sirvo yo?
EN: Blimey. Now, then, who's going to be mother?
ES: - ¿Quién sirve hoy, Monnie?
EN: Will you be mother?
ES: - Está bien.
EN: Imagined what it is to be mother of Nero.
ES: Imagínense, además, si el hijo se llama Nerón... y la madre Agripina.
EN: For what they pay, little or much, they expect you to be mother, father, policeman, minister, teacher, guardian, confidant, and friend.
ES: Por lo que pagan, mucho o poco, esperan que Ud. sea madre, padre policía, ministra, profesor, guardián, confidente y amiga.
EN: I don't want to be mother to a dumb thing!
ES: ¡No quiero ser la madre de algo mudo!
EN: Shall I be mother?
ES: ¿Hago de madre?
EN: Elsa... you pour the tea and be mother, eh?
ES: Llegas a tiempo, Elsa. Sirve el té y haz de madre.
EN: And I have to be mother and father, psychiatrist, a host, teacher, interpreter, peacemaker and joke-maker, to a silly crowd of Americans identical to my last silly crowd of Americans, and my next crowd.
ES: Y tengo que hacer de madre, padre, psiquiatra, anfitrión, profesor, intérprete, pacificador y bufón para una ridícula panda de americanos idéntica a la última ridícula panda de americanos y a la que viene.
EN: After the war, there'll be mother for each survivor.
ES: A sus madres las verán quienes sobrevivan a la guerra.
EN: You be mother.
ES: Tú serás madre.
EN: I watched her wither away trying to be mother and father.
ES: La vi marchitarse tratando de ser madre y padre.
EN: A child for whom everything and everyone... mankind and all his history... would be mother and father.
ES: Un hijo para quien todo y todos, ...el hombre y su historia, ...sean su madre y su padre.
EN: Shall I be mother, then?
ES: Como digas, Molly.

Language: en

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