But what is used for but that, usually after a negative, and excludes everything contrary to the assertion in the following sentence. ``Her needle is not so absolutely perfect in tent and cross stitch but what my superintendence is advisable.'' --Sir W. Scott. ``Never fear but what our kite shall fly as high.'' --Ld. Lytton.

What ho! an exclamation of calling.

What if, what will it matter if; what will happen or be the result if. ``What if it be a poison?'' --Shak.

What of this? that? it? etc., what follows from this, that, it, etc., often with the implication that it is of no consequence. ``All this is so; but what of this, my lord?'' --Shak. ``The night is spent, why, what of that?'' --Shak.

What though, even granting that; allowing that; supposing it true that. ``What though the rose have prickles, yet't is plucked.'' --Shak.

What time, or What time as, when. [Obs. or Archaic] ``What time I am afraid, I will trust in thee.'' --Ps. lvi. 3.

What time the morn mysterious visions brings. --Pope.

Source: Webster's Revised Unabridged Dictionary (1913)