'Deshita' is the past tense of 'desu'. 'Desu' is a copula in Japanese that acts much similar to 'to be' in English in its "linking verb/copula" role.
Example:
He is happy <-> Kare wa ureshii desu.
They were boring. <-> Aitsura wa tsumaranai deshita.
In addition to this sort of usage, it can also be used in other expressions/sentences to provide 'tense' for the phrase/expression.
Example:
Sumimasen deshita <-> I'm sorry. (About something that has already happened.)
Shia Deshta? The above is not correct. "Geimu/shiai wa dou deshita?" would work.
This is not a Japanese word.
Japanese does not have a word for "it."
Abbi does not appear to be a Japanese word.
The Japanese word for cute is Kawaii, The Japanese word for scared Kowai
Japanese word for surender
This is not a Japanese word.
Vusu can not be a Japanese word.
Yes. It is a Japanese word.
there is no word bhaga in japanese, baka is fool
There is no equivalent word in Japanese for the English word "a."
There is no such word in Japanese - shrine is an English word.