The Spanish verb 'culpar' (to blame) comes directly from the Latin verb 'culpare', which had the same meaning. The Latin verb 'culpare' was formed by combining the noun 'culpa' (meaning 'fault' or 'blame') with the verbal suffix '-are', which was commonly used to create verbs in Latin. This formation pattern of creating verbs from nouns was common in Latin and continues in Spanish.

Several common Spanish words are related to 'culpar', including the noun 'culpa' (fault, guilt), the adjective 'culpable' (guilty), and 'disculpar' (to excuse, to pardon) which is formed by adding the prefix 'dis-' to indicate the opposite action. These words maintain a clear connection to the original Latin meaning of fault and blame.

English speakers might recognize the connection to words like 'culpable' (deserving blame), 'culprit' (a guilty person), and 'exculpate' (to clear from blame). These English words were borrowed from the same Latin root 'culpa' and maintain similar meanings related to blame and guilt. The English word 'culpable' is particularly close in both form and meaning to its Spanish cousin.