IPA: //ˈwaɪdˌmaʊθt//
KK: /ˈwaɪdˌmaʊθt/
Describing something that has a mouth that is wide open or large in size.
The widemouthed jar made it easy to reach the bottom for the last cookie.
Widemouthed → It is formed from "wide" (from Old English "wīd", meaning broad or extensive) and "mouthed" (from Old English "mūð", meaning mouth). The word "widemouthed" describes something that has a broad or extensive mouth opening.
Think of something that is 'broad' ('wide') and has a 'mouth' ('mūð') — that's why 'widemouthed' refers to something with a wide opening.