The Spanish verb 'gritar' (to shout) comes from Late Latin 'critare' meaning 'to shout', which in turn developed from Classical Latin 'quiritare' meaning 'to cry out or call for help'. The evolution from 'quiritare' to modern Spanish 'gritar' shows some interesting sound changes: the initial 'qui-' sound transformed to 'cri-' in Late Latin, and then to 'gri-' in Spanish, while maintaining the core meaning of vocal exclamation.

Some related Spanish words include 'grito' (a shout or scream), 'gritón' (someone who shouts a lot), and 'gritería' (shouting or clamor). These words all share the same root and form a family of terms related to loud vocalization.

While English doesn't have any direct cognates from the Latin 'quiritare', we can find some conceptually similar words that express vocal exclamation. The closest connection might be found in words like 'cry' and 'criticize', though these come from different Latin roots. The similarity in sound between 'gritar' and 'cry' is coincidental rather than etymological.