The piano teacher's bored look betrayed he wasn't paying much attention to his pupil's boringly stereotype rendition of the brilliantly composed etudes.
If you are bored, you feel tired and impatient because you have lost interest in something or because you have nothing to do. I am getting very bored with this entire business. tired and impatient because you do not think something is interesting, or because you have nothing to do
tired of the monotony, as in: After ten speeches, I got bored because every speaker said the same thing
tired of the world; "bored with life"; "strolled through the museum with a bored air"
uninterested because of frequent exposure or indulgence; "his blase indifference"; "a petulent blase air"; "the bored gaze of the successful film star"