in a world of one's own, deeply absorbed in one's thoughts or activities, not paying attention to the surroundings
Word Origin
Language
Old English
Original word
weorold
Word parts
wer (man) + ald (age)
Originally meant
age of man
Background
The word 'world' comes from the Old English 'weorold', which means 'age of man'. It originally referred to the human existence or life on earth. Over time, it evolved to mean the earth and everything in it.