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English word perky comes from English -y, English perk
-y (English)
Forming abstract nouns denoting a state, condition, or quality.. Used in the name of some locations which end in -ia in Latin. Forming diminutive nouns. Also used for familiar and pet names as a term of endearment. Added to nouns and adjectives to form adjectives meaning “having the quality of”.. Added to verbs to form adjectives meaning "inclined to".
perk (English)
(intransitive) To appear from below or behind something, emerge, pop up, poke out.. (intransitive, obsolete) To exalt oneself; to bear oneself loftily.. (transitive) To make trim or smart; to straighten up; to erect; to make a jaunty or saucy display of. (obsolete) Smart; trim; spruce; jaunty; vain. (informal) Perquisite. (dated) To peer; to look inquisitively. (obsolete) To perch. [...]
perky (English)
Lively or enthusiastic.. Standing upright; firm.