The phrase "passable entertainment" refers to something that is moderately enjoyable or satisfactory, but not particularly outstanding or exceptional. Full definition
As it stands now, Meet Joe Black is passable entertainment with lots to think about, and delivers a few moments of greatness amid awkward scenes aplenty. (qwipster.net)
Put them all down in the middle of a tension - filled shoot «em up and the results go from passable entertainment to something really terrific. (scifimoviepage.com)
However, what keeps Suicide Squad on the level of being merely «passable entertainment at best» is the choppy and stuttering nature of the ill - defined plot, perhaps undone by yet another instance of nervous studio meddling, ostensibly to try to not stall momentum for their young universe of tent - pole films meant to keep them in the black for years to come. (qwipster.net)