The only free and comprehensive online etymological dictionary of the Spanish language
perdonador (Noun) "one who forgives"
From perdonar.
perdonar (Verb) "to forgive"
12th cent. From Vulgar Latin *perdonare 'id.,' a calque from Germanic languages (cf. English for-give) formed from the Latin per- "for" and donare "to give." For the etymology of per-, see por; for the etymology of donare, see donar.
Indo-European
Romance
Portuguese perdoar, Catalan perdonar, French pardonner, Italian perdonare
perdonavidas (Noun) "braggart"
18th cent. colloquialism. From perdonar and vida.
perfección f. (Noun) "perfection"
13th cent. From Latin perfectionem, accusative of perfectio 'id.' From perficere "to perfect," from per- "through" (see por) and facere "to do" (see hacer).
perfecto (Adjective) "perfect"
13th cent. From Latin perfectus 'id.,' the passive participle of perficere "to finish," "to perfect." From per- "through" (see por) and facere "to do" (see hacer).
Indo-European
Romance
Portuguese perfeito, French parfait, Italian perfetto, Romanian perfect
periódico m. (Adjective, Noun) "periodic;" "newspaper"
18th cent. An adjectival from Latin periodicus 'id.,' from periodus "period" (see período).
período m. (Noun) "period"
Late 15th cent. From Latin periodus 'id.' Borrowed from Ancient Greek περίοδος ‎(períodos) 'id.' From περί (perí) "around" ὁδός (hodós) "way," "course." περί, with Mycenaean pe-ri-, is from Proto-Indo-European *per-i̯ "in crossing" (whence pro-). ὁδός is from Proto-Indo-European *sod- 'id.'
Indo-European
Romance
French période
Indo-Iranian
Sanskrit ā-sad- "to tread," Avestan apa-had- "to weaken"
permiso m. (Noun) "permission"
From Latin permissus 'id.,' passive participle of permittere "to permit" (see permitir).
permitente (Adjective) "permitting"
From the verb permitir.
permitir (Verb) "to permit"
From Latin permittere 'id.,' formed from per- "through" (see por) and mittere "to send" (see meter).
Indo-European
Romance
Portuguese permitir, Catalan permetre, French permettre, Italian permettere, Romanian permite