Used sarcastically to imply that the person addressed or referred to has done something the speaker or writer considers to be foolish.
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.
An expression of puzzlement or discovery.
A greeting (salutation) said when meeting someone or acknowledging someone’s arrival or presence.
"Hello!" or an equivalent greeting.
To greet with "hello".
Used to indicate that the speaker hopes the listener understands what is being said.