Diggity, as a word of its own, has little or no commonly accepted meaning.
A)It may used as a substitute for any number of slang words or terms, such as "doubt" in the phrase "no doubt
" (ie. no diggity).
B)As rhyming slang, it is put before any word beginning with a D to accent it, such as "diggity dank
Often associated with the word "bomb," diggity can be preceeded with bomb to add emphasis.