úas

ias is a string that appears in Spanish grammar with two main functions. It is not a standalone word but a suffix that attaches to verbs or nouns to mark grammatical relations. In addition, it can be the ending of plural forms for a class of feminine nouns ending in -ía.

In verbs, the ending -ías marks the second-person singular form (tú) in two different moods or tenses. It is used in the imperfect indicative for -er and -ir verbs, as in comías (you used to eat), bebías (you used to drink), and vivías (you used to live). It is also the second-person singular ending in the conditional mood for verbs of any conjugation, as in hablarías (you would speak), comerías (you would eat), and vivirías (you would live). The pronunciation typically places the accent on í, forming co-mí-as and related patterns.

As a noun plural ending, -ías appears on feminine nouns that end in -ía, forming the plural with -ías. Common examples include alegría → alegrías (joys), melodía → melodías (melodies), and sabiduría → sabidurías (wisdoms). In many cases the stress pattern remains on the same syllable as in the singular, though pronunciation can vary with the word.

Etymology traces -ía and its plural -ías to Latin -ia, a productive suffix in Romance languages for forming abstract nouns and place/collective terms. In modern Spanish it serves important concisional and nominal functions, appearing across everyday vocabulary.