especially/particularly  used when you want to emphasize that something concerns or affects one person or thing more than others, or is true about a particular situation more than others : This disease mostly affects women, particularly older women.  | Paris is always full of tourists, especially in the summer.  | It’s not easy to receive compliments, especially if you’re not used to them.  | The surface is very slippery, particularly when it has been raining. 
specially  spoken  especially : I like parks, specially when they’ve got lakes.  | You have to be careful what you say, specially if there are children listening. 
in particular  especially – used before or after a noun. Often used in the phrases anyone/anything/anywhere in particular  and someone/something/somewhere in particular : Mary loves most classical music, in particular Bach and Vivaldi.  | Kids in particular will love this show.  | Is there anything in particular  you would like to eat?  | Was there  someone in particular  you were hoping to meet? 
notably  formal  used for saying someone or something is an important example of what you are talking about : The use of illegal drugs – notably marijuana – has increased in recent years.  | A number of respected philosophers, most notably Leibniz, criticized Newton’s theories. 
above all  used for emphasizing that something is more important than all the other things you have mentioned : Get plenty of sleep, eat lots of good food, and above all try to relax. 
most of all  more than anything or anyone else : Swimming and soccer are fun, but I like dancing most of all.  | Out of everybody at school she was the person who helped me most of all.