regularly welcome someone, respond to the phone, or express shock.
A greeting (salutation) stated whenever meeting some body or acknowledging someone’s arrival or existence.
A greeting utilized whenever answering the telephone.
A call for response if it is not obvious if anyone is present or hearing, or if a telephone discussion might have been disconnected.
Used sarcastically to imply anyone addressed or referred to did one thing the speaker or blogger views becoming foolish.
An expression of puzzlement or finding.
An exclamation used as a greeting, to call interest, as an exclamation of shock, or even motivate one. This variant of halloo and holloo has become the dominant form. In the usa, it is the common greeting used in responding to a telephone.