Sympathy, Same Sentiment, Concurrence, Agree, Empathy
noun, verbal noun
When you have the same feeling as someone else, you have sympathy for them, because you know how they feel. How kind of you!
どうかん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
私もその意見に同感ですね。
I agree with that opinion as well.
今までにこんなに同感したことがないぐらい、思いっきり同感しています。
I've never agreed with someone so much.
「私、フグのこと嫌い。」「同感だわ。」
"I hate Fugu." "I feel the same way."