overstrung

adjective

1. overly tense or sensitive; strained; on edge: Their nerves were badly overstrung.
2. Archery. (of a bow) strung too tightly.

verb (used with object), o·ver·strung; o·ver·strung or (Rare) o·ver·stringed; o·ver·string·ing.

1. Music. to arrange the strings of (a piano) so that the bass strings cross over the treble.
2. Archery. to string (a bow) too tightly.

adjective

1. too highly strung; tense
2. (of a piano) having two sets of strings crossing each other at an oblique angle