I spent years writing a novel in which three characters get pulled into an elaborate and tentacular conspiracy.
Initial charges against Sarkozy in that tentacular Bettencourt case had been dropped.
But even paranoid melodramatic self-aggrandizers sniff out nefarious and tentacular plots from time to time.
1762, from Modern Latin tentaculum "feeler," from Latin tentare "to feel, try" (variant of temptare "to feel, try, test") + -culum, diminutive suffix.
tentacle ten·ta·cle (těn'tə-kəl)
An elongated, flexible, unsegmented extension, as one of those surrounding the mouth or oral cavity of the squid, used for feeling, grasping, or locomotion.