What is another word for half-hourly?
Pronunciation: [hˈɑːfˈa͡ʊ͡əli] (IPA) 
There are several synonyms for the word "half-hourly", which means occurring every half-hour. These include "bi-hourly", "semi-hourly", "thirty-minute intervals", "every 30 minutes", and "twice an hour". Each of these terms can be used interchangeably with "half-hourly" to indicate that something happens every 30 minutes. For example, if a train is scheduled to arrive at a station every half-hour, it could also be said that the train arrives bi-hourly or semi-hourly. These synonyms can be helpful when trying to convey the same idea in different ways or to avoid repetition in writing or speech.
