Accidents aren't especially common, but you never know.
He didn't especially want to learn to dance.
WORD CHOICE: WORD CHOICE: especially, speciallyIt is better to use especially in front of adjectives to emphasize them, although some people also use specially• The cake was especially good. • This part is especially interesting.Use especiallyto say that something applies more to one thing or situation than to others• Everyone loved it, especially the children.• You should call first, especially if you're going to be late.Use speciallyto say that something is done or made for a particular purpose• I got this specially for you.• specially designed equipment!!Especiallynever comes at the start of a sentence• He loves fruit. He especially likes kiwis (NOT Especially he likes ...).
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.