Dicey (4)
'dicey' is the definition.
(I've seen this before)
This is the entire clue.
(Another definition for touch-and-go that I've seen is " (Of an outcome) possible but very uncertain".)
'dicey' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for iffy that I've seen before include "Informally dubious or uncertain" , "Full of uncertainty" , "Informally dubious, not definite" , "Dubious (colloq.)" , "Dubious, risky (inf.)" .)