having a deep, often hidden meaning; suggestive or significant. Colloquial abbreviation of 意味深長, frequently used online and in conversation.
彼の一言は意味深で、みんなその後の話題を探った。
His remark was suggestive, and everyone tried to probe the conversation that followed.
SNSの投稿が意味深（いみしん）だと話題になった。
The social media post became a topic of conversation for being suggestive.
あの目つきは意味深長だね、と友達が言った。
My friend said that look was very suggestive.
そんな言い方をするなんて、意味深に聞こえるよ。
Saying it that way sounds suggestive.