Slabery or Slabbery: How To spell?
The word Slabery is misspelled against Slabbery, an adjective meaning "Like, or covered with, slabber or slab; slippery; sloppy."
Slabbery has double "bb" is mispronounced as "b"Remember double 'BB' in between the strings Sla & ery which should not be misspelled with single 'B'
Wrong Spelling:  Sla-b-ery  Correct Spelling:  Sla-bb-ery 
Explore spell check of Slabbery to spell without errors.