The Collaborative International Dictionary of English v.0.48:

Viscid \Vis"cid\, a. [L. viscidus, fr. viscum the mistletoe,
   birdlime made from the berries of the mistletoe; akin to Gr.
   ?: cf. F. viscide.]
   Sticking or adhering, and having a ropy or glutinous
   consistency; viscous; glutinous; sticky; tenacious; clammy;
   as, turpentine, tar, gums, etc., are more or less viscid.
   [1913 Webster]

WordNet (r) 3.0 (2006):

viscid
    adj 1: having the sticky properties of an adhesive [syn:
           gluey, glutinous, gummy, mucilaginous, pasty,
           sticky, viscid, viscous]

Moby Thesaurus II by Grady Ward, 1.0:

108 Moby Thesaurus words for "viscid":
   adherent, adhesive, amylaceous, bulldogged, bulldoggish, bulldoggy,
   bullheaded, cartilaginous, chewy, clabbered, clammy, clingy, close,
   close-knit, close-textured, close-woven, clotted, coagulated,
   cohesive, compact, compacted, compressed, concentrated, concrete,
   condensed, congested, consolidated, coriaceous, crammed,
   crammed full, crowded, curdled, dense, doughy, durable, fibrous,
   firm, gaumy, gelatinous, glairy, gluelike, gluey, glutenous,
   glutinose, glutinous, gooey, gristly, grumous, gumbo, gumbolike,
   gumlike, gummous, gummy, hard, hardy, heavy, impenetrable,
   impermeable, inspissated, jam-packed, jammed, jelled, jellied,
   jellylike, lasting, leatherlike, leathery, massive, mucilaginous,
   nonporous, obstinate, packed, pasty, persistent, resistant, ropy,
   self-adhesive, serried, sinewy, slabby, slimy, slithery, solid,
   starchy, stickable, sticky, stiff, stodgy, stringy, strong,
   stubborn, substantial, syrupy, tacky, tenacious, thick,
   thick-growing, thickened, thickset, tough, tough as leather,
   tremelloid, tremellose, untiring, vigorous, viscose, viscous,
   wiry