adverb
miles
mylz
adverb
1
(informal) By a large margin; a lot — used to strengthen a comparison.
"This new laptop is miles better than my old one."
"She finished the race miles ahead of everyone else."
How to Use Miles
Learner’s notesIn plain EnglishUsed before a comparative like "better" or "ahead" to mean "by a huge amount."
When to use it
Informal — fine in speech and casual writing, but avoid in formal reports ("significantly better" instead).
Common pairings
miles better
miles ahead
miles away from
Word Forms
Miles plural, Mileses plural
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Etymology
An informal extension of the noun mile (from Old English mīl, from Latin mīlia, "a thousand paces") — the sense of physical distance stretched into a figure of speech for "by a wide margin."