junkiest Definition

junk¹
noun

colloq:
1a. Worthless or rejected material; rubbish;

Thesaurus: rubbish, garbage, dregs, litter, refuse, waste, filth, trash; salvage, debris, detritus, scraps, miscellany, oddments, rummage (US), wreckage, odds and ends.
1b. Cheap and worthless.

Example: junk jewellery
2. Old or second-hand articles sold cheaply.
3. Nonsense.
4. slang
Narcotic drugs, especially heroin.

verb junked, junking

colloq:
1. To treat something as junk.

Thesaurus: discard, dump, scrap.
2. To discard or abandon something as useless.

Derivative: junky
adj

Rubbishy; worthless.

Etymology: 15c: from jonke pieces of old rope.