To be ill off

from The Collaborative International Dictionary of English v.0.48
Off \Off\ ([o^]f; 115), adv. [OE. of, orig. the same word as R.
   of, prep., AS. of, adv. & prep. [root]194. See {Of}.]
   In a general sense, denoting from or away from; as:
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   1. Denoting distance or separation; as, the house is a mile
      off.
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   2. Denoting the action of removing or separating; separation;
      as, to take off the hat or cloak; to cut off, to pare off,
      to clip off, to peel off, to tear off, to march off, to
      fly off, and the like.
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   3. Denoting a leaving, abandonment, departure, abatement,
      interruption, or remission; as, the fever goes off; the
      pain goes off; the game is off; all bets are off.
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   4. Denoting a different direction; not on or towards: away;
      as, to look off.
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   5. Denoting opposition or negation. [Obs.]
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            The questions no way touch upon puritanism, either
            off or on.                            --Bp.
                                                  Sanderson.
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   {From off}, off from; off. "A live coal . . . taken with the
      tongs from off the altar." --Is. vi. 6.

   {Off and on}.
      (a) Not constantly; not regularly; now and then;
          occasionally.
      (b) (Naut.) On different tacks, now toward, and now away
          from, the land.

   {To be off}.
      (a) To depart; to escape; as, he was off without a
          moment's warning.
      (b) To be abandoned, as an agreement or purpose; as, the
          bet was declared to be off. [Colloq.]

   {To come off}, {To cut off}, {To fall off}, {To go off}, etc.
      See under {Come}, {Cut}, {Fall}, {Go}, etc.

   {To get off}.
      (a) To utter; to discharge; as, to get off a joke.
      (b) To go away; to escape; as, to get off easily from a
          trial. [Colloq.]

   {To take off} {To do a take-off on}, {To take off}, to mimic,
      lampoon, or impersonate.

   {To tell off}
      (a) (Mil.), to divide and practice a regiment or company
          in the several formations, preparatory to marching to
          the general parade for field exercises. --Farrow.
      (b) to rebuke (a person) for an improper action; to scold;
          to reprimand.

   {To be well off}, to be in good condition.

   {To be ill off}, {To be badly off}, to be in poor condition.
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