Pronunciation: [hˈɛdfə͡l] (IPA) 
The word "headful" is spelled with the IPA phonetic transcription /ˈhɛdfʊl/. This word is derived from the word "head" and means a quantity that can fit in one's head or mind. The spelling of this word follows the phonetic rules of English where the "e" is pronounced as /ɛ/ and the "fu" is pronounced as /fʊ/. The stress falls on the first syllable /ˈhɛd/ making it easy to pronounce for English speakers.
The word "headful" is a combination of the noun "head" and the suffix "-ful".
The noun "head" comes from the Old English word "hēafod". Its origins can be traced back to the Proto-Germanic word "haubudam", which meant "skull" or "head". This word further evolved from the Proto-Indo-European root "kaput", which had a similar meaning. Over time, "head" acquired multiple figurative senses, such as the seat of intellect or the leader of a group.
The suffix "-ful" is derived from the Old English word "-full", which meant "full of" or "abounding in". It has roots in the Proto-Germanic word "-fullaz", indicating the same sense.
