noun, feminine/ˈt͡ʃaɾka/plural: charcas
pond, pool (smaller than laguna); puddle, marshy area; someone who follows trends without their own judgment
“Tu amigo Juan es muy charca, ha vuelto a pedir una smashburger sin pensarlo.” — Your friend Juan is very charca, he ordered a smashburger again without thinking twice.
Related to charco (“pool, puddle”), a word usually considered imitative, but it could also be a borrowing from Basque.