(adj)

 fear of a recongnized danger

[assuring]

distress

(noun)

physical or mental suffering

[comfort]

(noun)

a group of people uner common leadership

[X]

drill

(noun)

strict training involving much repition

[X]

glum

(adj)

gloomy or moody

[cheerful]

mediocre

(adj)

of average quality

[superior]

(adj)

going before

[succeeding/following]