1. apostatise abandon one's beliefs or allegiances
  2. apostatize abandon one's beliefs or allegiances
  3. appositeness appropriateness for the occasion
  4. Apus apus common European bird with a shrieking call that nests chiefly about eaves of buildings or on cliffs
  5. apostasy rejecting your religious beliefs, political party or cause
  6. upstairs on a floor above
  7. oppositeness the relation between opposed entities
  8. appositive relating to or being in apposition
  9. Apios tuberosa a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans
  10. epistasis the suppression of a gene by the effect of an unrelated gene
  11. abstruse difficult to understand
  12. postpose place after another constituent in the sentence
  13. abstemious marked by temperance in indulgence
  14. upset price (auction) the minimum price at which a seller of property will entertain bids
  15. apsis a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar
  16. oppositive expressing antithesis or opposition
  17. abecedarius a poem having lines beginning with letters of the alphabet in regular order
  18. Job's tears hard pearly seeds of an Asiatic grass; often used as beads
  19. appositively in an appositive manner
  20. apostrophise use an apostrophe

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