IPA: /haɪˈflaɪər/
KK: /haɪˈflaɪər/
A person or company that is very successful or ambitious, often achieving great things quickly or in an extravagant way.
The young entrepreneur is a highflier in the tech industry, known for her innovative ideas.
Highflier is formed from "high" (from Old English "hēah", meaning elevated or tall) and "flier" (from the verb "fly", meaning to soar or move through the air). The word describes someone who is ambitious and aims for great heights in their endeavors.
Think of someone who is 'elevated' ('high') and 'soaring' ('flier') towards their goals — that's why a highflier is someone who aims high in life.
No commonly confused words.