high-flying
US /ˌhaɪˈflaɪ.ɪŋ/
UK /ˌhaɪˈflaɪ.ɪŋ/

1.
very successful
:
•
She is a high-flying executive in a multinational company.
•
The company has a reputation for its high-flying projects.
2.
flying at a great height
:
•
We saw a high-flying eagle circling above the mountains.
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The pilot reported a high-flying unidentified object.