The word 'yoohooed' is a term used to express a sharp, attention-seeking shout or call. Synonyms for this term might include hollered, called out, shouted, or yelled. Other phrases that could be used in place of 'yoohooed' might include cry out, raise one's voice, scream, or make a noise. Depending on the context in which the term is used, alternative phrases might also include 'alerted,' 'notified,' 'announced,' or 'contacted.' Regardless of the phrase or term chosen, it is clear that 'yoohooed' is a particularly expressive and dynamic word that can capture the attention of listeners or readers alike.