por sí mismo

by himself; on his own, on his own; by himself; for itself

→ por

phrase Uncommon #16,007

by himself; on his own Used to say that someone does something independently, without help. It can also mean “by itself” for things. The phrase changes form to match gender and number: por sí misma, por sí mismos, por sí mismas.

SP: Tom lo hizo por sí mismo.

EN: Tom did it by himself.

Lo hizo por sí mismo sin pedir ayuda a nadie.

He did it by himself without asking anyone for help.

Tom tuvo que hacer todo por sí mismo.

Tom had to do everything by himself.

Tom no logra atar sus zapatos por sí mismo.

Tom can't tie his shoes by himself.

Lo hizo bien por sí mismo.

He did well for himself.

— Un simple accidente (2025)

No dejes que lo haga por sí mismo.

Don't let him do it by himself.

No por sí mismo.

Not by itself.

— Harry Potter y la piedra filosofal (2001)

Creo que el historial de Tom habla por sí mismo.

I think Tom's track record speaks for itself.

Sólo se preocupan por sí mismo.

They only care about themselves.

— Train to Busan (2016)

Todo el mundo debe aprender por sí mismo al final.

Everyone has to learn for themselves in the end.

Tom dominó el francés estudiando por sí mismo.

Tom mastered French by studying on his own.

Muchos de los experimentos los hizo Tom por sí mismo.

Many of the experiments were done by Tom himself.

No puedes dejar que Tom beba por sí mismo.

You can't let Tom drink by himself.

Tom hizo sus deberes por sí mismo.

Tom did his homework by himself.

Si no me cree, vaya y véalo por sí mismo.

If you don't believe me, go and see for yourself.

Después de que su padre murió, tuvo que estudiar por sí mismo.

After his father died, he had to study on his own.

Un hombre que no piensa por sí mismo no piensa en absoluto.

A man who does not think for himself does not think at all.

No puedo creer que Tom fuera capaz de hacer esto por sí mismo.

I can't believe Tom was able to do this by himself.

Tom podrá hacerlo por sí mismo.

Tom will be able to do it himself.

Tom lo hizo por sí mismo.

Tom did it by himself.

No se le puede mover ahora, sólo hasta que empiece a caminar por sí mismo.

He cannot be moved now, only until he starts walking on his own.

— Nausicaä del valle del viento (1984)

phrase Uncommon #19,276

on his own; by himself; for itself Used to emphasize that someone does something without help, or that something exists or works independently. It can agree in gender and number: por sí misma, por sí mismos, por sí mismas.

SP: Al final, todo el mundo debe aprender por sí mismo.

EN: In the end, everyone must learn on their own.

Él aprendió por sí mismo el francés.

He taught himself French.

Al final, todo el mundo debe aprender por sí mismo.

Ultimately, everyone has to learn for themselves.

Tom tiene edad suficiente para decidir por sí mismo.

Tom is old enough to decide for himself.

Nada fue creado por sí mismo.

Nothing was created by itself.

Ello habla por sí mismo.

That speaks for itself.

Ziri vio el fantasma por sí mismo.

Ziri saw the ghost for himself.