IPA: /ˈaɪfəl/
KK: /ˈaɪfəl/
A full or satisfying view of something, often something visually appealing or surprising.
The sunset provided an eyeful of beautiful colors that took my breath away.
Eyeful is formed from "eye" (from Old English "ēage", meaning the organ of sight) and "-ful" (meaning full of). The word "eyeful" refers to a full view or a sight that is pleasing to the eye.
Think of 'eye' as the organ of sight and '-ful' meaning full of — so an 'eyeful' is something that gives you a full view or a pleasing sight.
No commonly confused words.