lávelse
Lávelse is a linguistic term that appears in discussions of Portuguese verb forms as a nonstandard or historical variant of the reflexive verb lavar-se. In modern standard Portuguese, the imperative forms most commonly used for lavar-se are lave-se (formal you) and lava-te or lave-te (informal you), with additional forms for plural subjects. Lávelse is not part of contemporary normative usage in major dictionaries, but it is sometimes cited in grammars or orthography studies as an example of variation in stress marks or in archaic spellings.
Historically, some older Portuguese orthographies experimented with diacritics to indicate stress or to reflect particular pronunciation
Phonologically, a form like lávelse would be expected to be pronounced with a stressed first syllable, roughly
See also: lavar-se, lave-se, lava-te, imperatives in Portuguese, orthographic variation.