1.aback :? backwards
2.abaft :? at the rear,behind
3.abacus : a caculating frame
4.abandon : to forsake
5.abase : to bring down
6.abate : to lessen
7.abatement: the act of lessen
8.abattoir : the slaugther-house
9.abbey : the house for mons or nums
10.abash : to put the flush