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Pronunciation varies by accent · noun
(aviation) The horizontal speed of an aircraft relative to the ground..
Use groundspeed when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Groundspeed means (aviation) The horizontal speed of an aircraft relative to the ground..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use groundspeed where its definition matches the intended context.
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