A- n.
fies on or in (from an, a forms of AS. on), denoting a state, as in afoot, on foot, abed, amiss, asleep, aground, aloft, away (AS. onweg), and analogically, ablaze, atremble, etc. (2) AS. of off, from, as in adown (AS. ofdüne off the dun or hill). (3) AS. a- (Goth. us-, ur-, Ger. er-), usually giving an intensive force…
MIS- n.
A prefix used adjectively and adverbially in the sense of amiss, wrong, ill, wrongly, unsuitably; as, misdeed, mislead, mischief, miscreant.