Answer: skywrite

AnswerCrossword Clue
SKYWRITE

Use lofty words?

SKYWRITE

Create high-level advertising?

SKYWRITE

Make a plane message

SKYWRITE
Air one's ad, in a way
SKYWRITE
Pitch at a high level?
SKYWRITEAdvertise, in a way.
SKYWRITEUse a plane for a pencil
SKYWRITEDesign meaningful contrails