I give you the definition of a word to which if A is added as a prefix, you get another word whose definition is also given.
-1.To place your money on something with A becomes encouragement. 4 letters
-2.A with a wrestling match becomes a preposition meaning 'nearly or related to'. 5
-3.Structure connecting two places with A becomes a word meaning to shorten or edit. 7
-4.Profit with A becomes another time. 5
-5.A with a man becomes a kind of broker. 5
-6.An island with A becomes a part of a church divided laterally from the nave by a row of pillars or columns. 5
7. A sound of distinct pitch with A becomes a word meaning to make amends. 5
8.An empty space with A becomes a word meaning 'to stay clear of'. 5
-9.A place for large gatherings with A becomes a broad roadway lined with trees. 6
-10.A drug with A becomes a heavenly body. 8