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1.
Adj.

1. Extremely heretical.

2. Something that is heretical, but literally delicious.
1. Hey, remember that time we stole the Ark of the Covanent, then held out against the crusades? Yeah, that was infidelicious.

2. Porkchops during Ramadan? Infidelicious!
by Tim March 03, 2005
 
2.
How food tastes when eaten in front of someone whose religion forbids them from eating that food.
Hey Achmad, this pork butt is infidelicious. Too bad you can't have any.
by I'm disgruntled September 24, 2006
 
3.
Adjective describing the ecstatic feeling of cheating on someone.
So I cheated on my girlfriend last night. It was so infidelicious.
by Ledacious September 03, 2011