moreover

adverb (sentence adverb) formal a word meaning `in addition', used to introduce information that adds to or supports what has previously been said: The rent is reasonable and, moreover, the location is perfect. USAGE NOTE: MOREOVER FORMALITY Moreover is very formal and not common in spoken English. But you may see it used in a report: Local people would like a new road. Moreover, there are good economic reasons for building one. Also is a less formal way of adding a reason or idea. It can be used at the beginning of a sentence to link it to the previous one: You can stay at our house. Also, I can check the plane times for you. Or it can be used within a sentence: I can also check the plane times for you. Besides (that) is more informal and used especially to add a reason. June isn't a good month to go there. Besides, I want to finish my exams first. People also often add reasons and ideas within one sentence using and made stronger with moreover/also/besides: You should switch to a healthier diet and moreover/also/besides that stop smoking.