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".
Expression of terror, awe, surprise, astonishment, etc., often at something seen for the first time or remembered immediately before using this term.