2150: ser/estar: Why Differ? Nov 3, 2020

The Spanish verb 'ser' is notable for a lot of reason, but both it and its counterpart 'estar'—meaning 'to be'—come from the Latin meaning 'to sit' (sedēre) and 'to stand' (stāre) respectively, which may help to explain why 'ser' is for permanent things, and 'estar' is more often for transient uses. This is not actually so rare to see verb meaning 'sit' or 'stand' used existentially. While in some languages this is standard, even English has the phrase "that sits well with me", though this is obviously not exactly the same. In the case of 'ser', the verb is irregular partly because some forms come from the Latin 'sum', always having meant 'to be', namely present tenses, the imperfect, and the preterite tenses.