1.purse

V-T If you purse your lips, you move them into a small, rounded shape, usually because you disapprove of something or when you are thinking.

2.sulky

ADJ Someone who is sulky is sulking or is unwilling to enjoy themselves.

3.tremulous

ADJ If someone's voice, smile, or actions are tremulous, they are unsteady because the person is uncertain, afraid, or upset.

4.glower

V-I If you glower at someone or something, you look at them angrily.

5.swotty

ADJ given to studying hard, esp to the exclusion of other activities

5.morale

N-UNCOUNT Morale is the amount of confidence and cheerfulness that a group of people have.

6.curt

ADJ If you describe someone as curt, you mean that they speak or reply in a brief and rather rude way.

7.scowl

V-I When someone scowls, an angry or hostile expression appears on their face.