Theory:

Meaning of difficult words from the poem 'The Duck and the Kangaroo':
 
S.No
Words
Meaning
1
HopMove by jumping one foot
2
NastyVery bad or unpleasant
3
ComplimentAn expression of praise or admiration
4
ScepticalHaving doubts with regards to a topic
5
CordialVery friendly
RoutineActions or habits regularly followed
7
Humorous Very funny and comical
8
QuackThe sound made by a duck
9
ReflectionSerious thoughts or consideration
10
ObjectionDenying something
11
RoomatizA disease related to bone disorder
12
UnpleasantA very bad state
13
CloakA over garment that hangs loose from shoulders
14
Web feetThe feet of a duck that resembles a web
15
CigarA cylinder of tobacco rolled for smoking
16
PaleLacking colour
17
YarnThread used for knitting