Suggestion
Hint, Implication
noun, する verb
Someone prone to indicate and instigate will have lots of suggestions for other people. By dropping hints, they can indicate problems and instigate fights among people. Their implications do a lot of harm.
しさ
This is a jukugo word that uses the on'yomi readings of the kanji. You didn't learn this reading for 示 yet, so here's a mnemonic to help you:
Someone keeps coming up to you making suggestions and dropping hints that you should buy a sheep (し). It happens so much that you finally decide to grab the hint-droppers arm and... oh my gosh, that's a hoof. They're a sheep!
メッシが、移籍を示唆するコメントをしたようだ。
It seems like Messi made a comment hinting at his transfer.