ideallyEnglishOxford New American Dictionaryideally /īˈdē(ə)lē, aɪˈdi(ə)li / ▸ adverb 1 [as sentence adverb] preferably; in an ideal world: ideally, you should exercise for 30 minutes every day. 2 [as submodifier] in the best possible way; perfectly: her experience makes her ideally suited to the job.