FORTUITOUS
(a) Unfortunate
(b) Accidental
(c) Planned
(d) Ludierous

AVERSION
(a) Promotion
(b) Attraction
(c) Hatred
(d) Passion

IMPERIOUS
(a) Characterless
(b) Impermanent
(c) Imperfect
(d) Submissive

MARVELLOUS
(a) Awful
(b) Mechanical
(c) Meaningless
(d) Unsentimental

VEXATION
(a) Comfort
(b) Slyness
(c) Fright
(d) Nervousness

DOLEFUL
(a) Aggressive
(b) Cheerful
(c) Tired
(d) Involved

SENILITY
(a) Virility
(b) Laziness
(c) Maturity
(d) Exhaustion

UNGAINLY
(a) Quick
(b) Short
(c) Awkward
(d) Graceful

SPORADIC
(a) Rare
(b) Frequent
(c) Sharp
(d) Coordinated

Kapil's bowling yesterday proved very costly.
(a) economical
(b) frugal
(c) thrifty
(d) expensive

I cannot see much likeness between the two boys.
(a) enmity
(b) hatred
(c) difference
(d) dislike