This is the 6356th most frequent Japanese word.
シ
The Japanese word "シ" can represent the katakana character for "shi" used in various contexts, such as transliteration, abbreviations, or foreign words.
Here, シ is used as a casual conjunction, similar to 'so' or 'and' in English, connecting reasoning.
これは重要なことだシ、注意してください。
This is an important matter, so please pay attention.
シ is here emphasizing additive information, listing qualities or facts about the subject casually.
彼は博士号を持っているシ、経験も豊富です。
He holds a PhD and has extensive experience.
シ is employed to link a premise or statement leading toward eliciting the addressee's input.