Someone who is poor at talking or communicating; not good at speaking or explaining.
彼は話下手なので、初対面の人と緊張してしまう。
He's awkward at talking, so he gets nervous with people he meets for the first time.
私は話下手だが、メールなら要点をまとめやすい。
I'm not good at speaking, but I can summarize points more easily in emails.
プレゼンの練習をして、少し話下手を直した。
I practiced my presentation and improved my poor speaking a little.
子供の頃から話下手で、最初は友達作りに苦労した。
I've been awkward at talking since childhood and initially had trouble making friends.