Synonyms: excitable
Definition: easily excited
Similar words: high-keyed
Definition: (of persons) excitable
Definition: easily aroused or excited
Usage: a quick temper; a warm temper
Similar words: spooky, skittish, flighty, nervous
Definition: unpredictably excitable (especially of horses)
Synonyms: excitable, irritable
Definition: capable of responding to stimuli
Similar words: sensitive
Definition: responsive to physical stimuli
Usage: a mimosa's leaves are sensitive to touch; a sensitive voltmeter; sensitive skin; sensitive to light