Interrogatingly is a word that is often used to describe an intense and questioning manner. There are many synonyms for interrogatingly that can be used to convey a similar meaning. Some of these synonyms include interrogatively, quizzically, inquisitively, cross-examiningly, pointedly, and searchingly. Each of these words has its own nuances and connotations, and can be used interchangeably depending on the context in which they are used. For example, interrogatively might be more appropriate when asking a direct question, while quizzically might be better used when expressing disbelief or confusion. Ultimately, the right synonym for interrogatingly will depend on the specific situation and intended tone.