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/hæˈloʊ/ · interjection
A loud exclamation; a call to invite attention to something or to incite; a shout..
Halloa! what's this?
"Halloa! Below there!" When he heard a voice thus calling to him, he was standing at the door of his box, with a flag in his hand, furled round its short pole.
"Halloa! Stop there!" he shouted, holding his bicycle to block our road.
Use halloa when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Halloa means A loud exclamation; a call to invite attention to something or to incite; a shout..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Halloa! what's this?
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