Learn how to say Overstrung correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word overstrung:
1 /ˈəʊvəstrʌŋ/ (of a piano) having strings in sets crossing each other obliquely.
2 /əʊvəˈstrʌŋ/ dated (of a person) extremely nervous or tense:
at two in the morning the overstrung youth finally ran out of questions