soporific

soporific \sop-uh-RIF-ik; soh-puh-\ , adjective;
1. Causing sleep; tending to cause sleep.
2. Of, relating to, or characterized by sleepiness or lethargy.
noun:1. A medicine, drug, plant, or other agent that has the quality of inducing sleep; a narcotic.

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This blog's pretty much a soporific.

A sophomoric soporific, actually.