junky 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.

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junkie
junky
noun junkies

1. slang
A drug addict or drug-pusher.
2. colloq
Someone who is addicted to something.
Example: a coffee junkie

Etymology: 1920s: from junk¹ 4.

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junky junk¹junkie