ESPECIALLY
particularly, peculiarly, especially, specially
(adverb) to a distinctly greater extent or degree than is common; “he was particularly fussy about spelling”; “a particularly gruesome attack”; “under peculiarly tragic circumstances”; “an especially (or specially) cautious approach to the danger”
specially, especially
(adverb) in a special manner; “a specially arranged dinner”
Source: WordNet® 3.1
Etymology
Adverb
especially (comparative more especially, superlative most especially)
(manner) In a special manner; specially.
(focus) Particularly; to a greater extent than is normal.
(focus) Used to place greater emphasis upon someone or something.
Synonyms
• (special manner)
• (particularly): in particular; see also specifically
• (emphasis): first and foremost; see also above all
Source: Wiktionary
Es*pe"cial*ly, adv.
Definition: In an especial manner; chiefly; particularly; peculiarly; in an
uncommon degree.
ESPECIAL
Es*pe"cial, a. Etym: [OF. especial, F. spécial, L. specialis, fr.
species a particular sort, kind, or quality. See Species, and cf.
Special.]
Definition: Distinguished among others of the same class or kind; special;
concerning a species or a single object; principal; particular; as,
in an especial manner or degree.
Syn.
– Peculiar; special; particular; uncommon; chief. See Peculiar.
Source: Webster’s Unabridged Dictionary 1913 Edition