halloo

UK: /həˈluː/ US: (hə lo̅o̅′)

Inflections of 'halloo' (n): npl: halloos

Inflections of 'halloo' (v): (⇒ conjugate)

halloos

v 3rd person singular

hallooing

v pres p

hallooed

v past

hallooed

v past p

WordReference Random House Unabridged Dictionary of American English © 2026

hal•loo  (hə lo̅o̅′), interj., n., pl. -loos, v.i., v.t., -looed, -loo•ing. 

1. hallo.

Collins Concise English Dictionary © HarperCollins Publishers::

halloo / həˈluː/, hallo, halloa / həˈləʊ/ sentence_substitute

1. a shout to attract attention, esp to call hounds at a hunt

noun ( -loos, -los, -loas)

1. a shout of "halloo"

verb ( -loos, -looing, -looed, -los, -loing, -loed, -loas, -loaing, -loaed)

1. to shout (something) to (someone)
2. (transitive) to urge on or incite (dogs) with shouts

Etymology: 16th Century: perhaps variant of hallow to encourage hounds by shouting