Theory:

Meaning of difficult words from the lesson "If I Were You":
  
S.No
Words
Meaning
1.
DivanA type of bed with a thick base and mattress
2.
Count onTo depend on someone or something
3.
RevolverA small gun
4.
Flashily In a way that looks bright, cheap and showy
5.
Bumps To hit something
6.
IntruderSomeone who enters a place illegally 
7.
Melodramatic Behaving or reacting in an exaggerated way
8.
NonchalantBehaving in a calm and relaxed way
9.
CrawlTo move along the ground on your hands and knees
10.
SympatheticSomeone who is kind, caring, and concerned about others
11.
Inflection
The way in which the sound of your voice changes during speech
12.
Emphasis
Special importance or attention given to something
13.
AssistTo help
14.
RarelyNot often
15.
GreengrocerA person who sells vegetables 
16.
CharmingVery pleasing or attractive
17.
TradespeoplePeople whose job involves selling goods
18.
GarageA building for keeping vehicles
19.
ModestNot talking too much about one's own abilities
20.
Considerable Great in amount, size or importance
21.
PlentyMore than enough
22.
Break into a houseTo enter into a building illegally or by force
23.
FigureTo think or guess something  
24.
The wilds of An area where few or no people live
25.
CopA police officer
26.
RetireTo leave for a quieter place
27.
TrifleSlightly  
28.
FancyTo suddenly start to like someone
29.
SarcasmThe use of remarks which means the opposite of what someone says
30.
GraveSeriously bad
31.
HuntedTo try to find somebody
32.
Gratuitous Unnecessary
33.
MelodramaA story or film in which the characters shows strong emotions than real people do
34.
FrustratedFeeling or expressing distress and annoyance resulting from an inability to change or achieve something
35.
PoshFashionable
36.
PantomimeAn act of expressing thoughts through movements rather than speech
37.
DecorativeAttractive
38.
EludeTo not be caught by anyone
39.
DodgeTo move quickly and suddenly in order to avoid somebody  
40.
MysterySomething that is difficult to understand and explain
41.
Propose To suggest something
42.
Luckiest break Fortunate and unexpected turn of events
43.
CloakTo cover or hide something
44.
Clear offTo go away
45.
DisguiseTo change the appearance
46.
MoustacheA line hair that grows on men's upper lip
47.
FrameA false story
48.
SlamTo shut something with a lot of force, making a loud noise
49.
RattleSharp knocking sounds
50.
SergeantRefers to a police officer
51.
CulturedWell-educated and able to understand and enjoy art, literature, etc.
52.
Lounge suitA man’s formal suit, consisting of  jacket and trousers, worn during business hours
53.
Horn-rimmed Horn-rimmed specs have a thick dark plastic frame