Is there a consistent rule to create reflexive verbs?

When utilizing reflexive verbs are all verbs able to become reflexive verbs by adding, se at the end of the infinitive verb?

I.E.: "lavarse", "tomarse", "rascarse"

1 Answer 1


Yes, and it's the rule you wrote yourself, adding se to the infinitive.
As all infinitives end in -ar, -er or -ir, adding se is totally regular and consistent.

At least grammatically, because there may be some verbs that are semantically unable to become reflexive, I.E. it wouldn't make any sense that the subject and the object be the same, although I'm not sure and can't name any right now.

As @Eduardo suggests, the verbs nacer and parir can't by logic be reflexive.
Another examples are llover, haber (when not acting as an auxiliary verb*) this two verbs don't have a subject (nobody rains) so they can't be reflexive.

* haber means there is in this case. When acting as an auxiliary as in haber ido (have gone) can be reflexive, but that's a different case.

  • 1
    Nacer por ejemplo. Uno puede nacer pero no nacerse.
    – drakorg
    Commented Jan 3, 2012 at 2:53
  • Parir sería otra excepción.
    – drakorg
    Commented Jan 3, 2012 at 3:16
  • @Eduardo, you're right, those verbs can't be reflexive following real life logic, but what if one were writing fantastic literature or telling a dream?
    – Petruza
    Commented Jan 3, 2012 at 13:48
  • 1
    En Argentina, podemos decir: ¡Se llovió todo! :) También se puede decir: Se llueve el techo, si el mismo tiene goteras.
    – rsanchez
    Commented May 19, 2014 at 19:44
  • @rsanchez claro, llover puede ser sintácticamente reflexivo, al agregarle se, pero desde el punto de vista semántico no es reflexivo porque no coinciden el objeto y el sujeto, como en golpearse, en donde el sujeto y el objeto son el mismo: por ejemplo una misma persona.
    – Petruza
    Commented May 25, 2014 at 23:30

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