zonked

UK: /ˈzɒŋkt/ US: /zɑŋkt, zɔŋkt/ ,(zongkt, zôngkt)

WordReference Random House Learner's Dictionary of American English © 2025

zonked /zɑŋkt, zɔŋkt/   adj. [usually: be + ~] [Slang.]

1. Slang Terms affected by or as if by alcohol or drugs;
   high.
2. Slang Terms exhausted or asleep:
   He was zonked after his long day.

WordReference Random House Unabridged Dictionary of American English © 2025

zonked  (zongkt, zôngkt), adj. [Slang.]

1. Slang Terms stupefied by or as if by alcohol or drugs;
   high.
2. Slang Terms exhausted or asleep.

Also, zonked′ out′. 

• zonk + -ed² 1955–60, American.

Collins Concise English Dictionary © HarperCollins Publishers::

zonked / zɒŋkt/ adjective

1. highly intoxicated from drugs or alcohol
2. utterly exhausted

Etymology: 20th Century: of imitative origin