caías
Caías is the second-person singular imperfect indicative form of the Spanish verb caer, meaning "you were falling" or "you used to fall." It is a conjugated form rather than a standalone noun and appears in sentences where the past action of falling is described for the subject tú.
In the imperfect tense, caías conveys ongoing or habitual past actions or sets the background for another
Orthography and related forms: caías follows the regular imperfect endings for -er verbs: -ía, -ías, -ía, -íamos,