もしかしたら
possibly, perhaps
Nobody has told him anything and he is already clearing the desk in his head. The same もし as if, stretched as far as it will go: there is an outside chance the transfer comes through: もしかしたら.
Sits with 多分 たぶん. 多分 is a fair bet, もしかしたら is a smaller chance being raised just in case.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.