To live deliciously means to live luxuriously, wantonly, or in self-indulgent prosperity. The expression describes a life devoted to pleasure and abundance.
Revelation applies the expression to Babylon, saying that she lived deliciously. The Revised Version renders it “wantonly,” while its margin gives “luxuriously,” emphasizing excessive indulgence.
The expression translates a Greek verb meaning to live hard or wantonly, so the biblical sense concerns luxurious and unrestrained living rather than merely enjoying pleasant things.