An expression of puzzlement or discovery.
A greeting used when answering the telephone.
A call for response if it is not clear if anyone is present or listening, or if a telephone conversation may have been disconnected.
Used sarcastically to imply that the person addressed or referred to has done something the speaker or writer considers to be foolish.
A greeting (salutation) said when meeting someone or acknowledging someone’s arrival or presence.
"Hello!" or an equivalent greeting.
To greet with "hello".
Expressing surprise or amazement.