Fortuitous

Adjective - lucky 

(偶然)

Foster

Verb - to promote/ aid

(培育)

Fraught

Adjective - filled with

(充满)

Frugal

Adjective - not wanting to spend money

(节俭)

Adjective - arrogant

(傲慢)

Hackneyed

Adjective - overused

(陈腐)

Hedonist

Noun - one who acts in pursuit of pleasure

(享乐主义)

Hypothesis

Noun - an unproven theory; educated guess

(假说)

Impetuous

Adjective - rash; impulsive

(浮躁)

Impute

Verb - to assign or attribute to someone

(意指)

Inconsequential

Adjective - without consequence; doesn't matter

(无关紧要)

Inevitable

adjective - unavoidable; definitely going to happen

(必然)

Intrepid

Adjective - fearless

(勇敢)

Intuitive

Adjective - knowing something by instinct

(直观的)

Jubilation

Noun - extreme happiness

(欢腾)