Theory:

Meanings of difficult words from the lesson "A Bicycle in Good Repair":
 
Sl. No.
Words
Meanings
1
ProposePut forward a plan or suggestion for consideration by others
2
StifflyIn a manner that is not relaxed or friendly
3
WhackingTo strike forcefully with a sharp blow
4
WobbleTo move unsteadily from side to side
5
Tool shedAn outbuilding for storing tools
6
TwiddlingTo twist, move, or fiddle with something
7
Remnant A part or quantity that is left after the greater part has been used, removed, or destroyed
8
GravelA loose aggregation of small water-worn or pounded stones
9
Bearings A part of a machine that allows one part to rotate or move in contact with another part with as little friction as possible
10
Grovelled Lie or crawl abjectly on the ground with one's face downwards
11
SensibleDone or chosen in accordance with wisdom
12
Gear-case
A protective casing for the gear mechanism of a vehicle
13
MischiefHarm or trouble caused by someone or something
14
RavagesThe destructive effects of something
15
LunaticAn extremely foolish or eccentric person; a crazy person
16
ScruffThe back of a person's or animal's neck
17
MuddleBusy oneself in an aimless or ineffective way; turn something untidy
18
KnackThe capacity of doing something
19
AssFoolish person
20
Topsy-turvyIn utter confusion or disorder
21
DispositionA person's inherent qualities of mind and character
22
ProvidenceFate
23
FascinatesAttract the strong attention and interest of someone
24
Inexplicable
Unable to be explained or accounted for
25
HopefulnessThe feeling or state of having hope
26
Refix  Fix something again
27
BullyingSeek to harm, intimidate, or coerce someone or something perceived as vulnerable
28
SubsequentSomething that happens after something in time; following
29
DegeneratedDecline or deteriorate physically, mentally, or morally
30
TumbleFall suddenly, clumsily, or headlong
31
FlushedExcited or elated by something
32
Quarter to one
Time -12.45
33
DishevelledOf a person's hair, clothes, or appearance which is untidy or disordered