==> language/english/spelling/sets.of.words/nots.and.crosses.s <==
Games magazine ran a contest on this.  The winner had 62:

		proxying|   buckwash  |   veldt
		------------------------------------
		stumbled|      j      |  zincography
		------------------------------------
		whack   | providently |   bumfs

Here are some good tries:

		backsword |thumpingly |   fez
		----------------------------------
		vexingly  |      q    | throwbacks = 61
		----------------------------------
		thump     | beadworks |   jingly

		backsword | thumpingly|  vex
		----------------------------------
		vexingly  |      q    | throwbacks = 60
		----------------------------------
		thump     |  bedrocks |   flying

		subjack   |downrightly|    fez
		----------------------------------
		novelwright|     q    |  backups   = 59
		---------------------------------- 
		pyx       |  subface  | downright

		krafts    | exhuming  | blowzy
		----------+-----------+-----------
		phylum    |     j     | transfixed = 56
		----------+-----------+-----------
		vexing    | folkways  | chump

		klutz     | cymograph |   fend
		----------+-----------+-----------
		exscind   |     j     | kymograph = 54
		----------+-----------+-----------
		myograph  |flunked    |   vibs
****
Unless noted otherwise, all words occur in Webster's Third New International
Dictionary, Merriam-Webster, Springfield, MA, 1961.