(adj): vs. relaxed) -- (in or of a state of physical or nervous tension
(adj): causing or fraught with or showing anxiety
(adj): vs. untroubled) -- (characterized by or indicative of distress or affliction or danger or need
(adj): of or relating to the nervous system
(adj): excited in anticipation
(adj): vs. unexcited) -- (in an aroused state
(adj): unpredictably excitable (especially of horses)
(adj): vs. unexcitable) -- (easily excited
