smackless

Etymology

From Middle English smakkeles, smechles, equivalent to smack +‎ -less. Cognate with West Frisian smakeleas (“tasteless”), Dutch smakeloos, smaakloos (“tasteless”), German geschmacklos (“tasteless”), Danish smagløs (“tasteless”), Swedish smaklös (“tasteless”), Icelandic smekklaus (“tasteless; indecent”).

Adjective

smackless (comparative more smackless, superlative most smackless)

1. (literally and figuratively) Lacking in flavour or gusto; tasteless; bland
   • 1961, Oswald Frewen, Sailor's Soliloquy, page 33:

     After a smackless ten days that far grimmer bogey, Fear, reasserted itself.

   • 2015, Ron Gridcharts, Make Yourself Uncomfortable, page 71:

     But when I was actually at the gig, my mind wandered feverishly. Like some smackless junkie, I was withdrawing from the nicotine, and it hurt. Lots.