'lipful' originates from the combination of 'lip' and the suffix '-ful', where 'lip' refers to the fleshy part of the mouth and '-ful' denotes a quantity that fills.

'lipful' is a modern English word formed by combining 'lip' and '-ful', following the pattern of words like 'handful' and 'spoonful'.

Initially, it meant 'an amount that fills the lips', and this meaning has largely remained the same in modern usage.