Aback = backwards, rear, rearwards, aft abaft, astern, behind, back

aback = backwards, rear , rearwards, aft abaft, astern, behind, back abacus=calculator abandoned=profligate, wicked, vicious, unprincipled, reprobate, incorrigible, sinful, graceless, demoralized, dissolute, depraved, bad, licentious, corrupt abandon= desert, leave abase=degrade,disgrace, bring low, reduce, humble, demean, stoop, humiliate, depress, lower, sink, dishonor abash =humiliate, humble, debase, degrade, reduce, depress, mortify, denigrate, embarrass, disconcert abbreviation=shortenedform, shortform ability = capacity, talent