Found 4 synonyms
notably, extremely, really, highly, peculiarly, severely, eminently, chiefly, more especially, singularly.
most (determiner / pronoun)
More especially synonyms
most notably, primarily, firstly, namely, principally, mainly, mostly, especial, expressly, purposely, deliberately, intentionally, above all, above all things, particular, exceptionally, exclusively, foremost, formerly, previously, even,
Synonyms "especially" in the picture
Synonyms with "especially"