Of or pertaining to masturbation (onanism)(adjective)
In a manner which suggests masturbation; hence, fruitless, self-congratulatory, self-absorbed, pointless(adjective)
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Use "onanistic" in a sentence
"The whole thing is essentially a carnival redux ofLady in the Water, in that Lady in the Water was a pointless, onanistic allegory about how misunderstood – nay, how veritably Christ-like – M. Night Shyamalan is for making movies as brilliant as Signs and, uh, The Village."
"Her fellow servants considered this a fair trade for indulging what seemed like a harmless fetish, but Powell understood the real transaction involved: This "gentleman" would never have asked something so onanistic of an equal."
"But then that is why our dear keiner is what he is, an onanistic waste paper hack who no doubt during his formative years was a regular recipient of the school yard beatdown for his daily lunch money to which he willingly and not so secretly submitted to with pleasure."