In Tokyo Dialect, they transform some i-adjectives so that they become

sugoi - suggee/sugee

yabai - yabee

itai - ittee

/

is there any in na-adjectives? Like

shizukana shizukka

genkina - genkki
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question
slang adjectives dialects contractions
Tokyo Dialect, 東京弁 : 形容詞 vs 形容動詞
Short answer is no, AFAIK.

However, if I may go beyond your restriction of "na-adjectives", things get
interesting.

For example, daikon だいこん is pronounced as deekon でーこん. Daikon is not an
adjective, but you see a similar pattern as sugoi / sugee.

BTW, this is not limited to Tokyo-ben. We say Okayama-ben turns "daikon
taitoite" だいこんたいといて （i.e. 大根を炊いておいて） into "deekon teeteete" でーこんてーてーて. In
fact, Okayama おかやま itself can be pronounced as Okyaama おきゃーま.

So when you mention "In Tokyo Dialect, they transform some i-adjectives so
that they become...", well, it's not just Tokyo Dialect, and it's not just
adjectives.
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answer