unless.
To make less; to diminish; to reduce.
To become less.
To rise, especially rapidly or unusually high.
To mount upward on wings, or as on wings, especially by gliding while employing rising air currents.
To rise in thought, spirits, or imagination; to be exalted in mood.
To remain aloft by means of a glider or other unpowered aircraft.
To fly high with little effort, like a bird.
The act of soaring.
An upward flight.