expediency and utility

expensive and unprofitable

experience and skill

experiment and explorations

expert and vigorous

explanation and elucidation

explore and examine

expressions and exclamations

expressive and effective

exquisite and powerful

extent and importance

extraordinary and unexpected

extravagant and grotesque

extreme and morbid

exuberant and infectious

F

fabulous and fabricated

facile and brilliant

facts and traditions

faculties and powers

faded and withered

failures and misadventures

faint and obscure

fair and impartial

faith and reverence

fallacy and danger

false and fugitive

fame and fortune

familiar and gracious

famous and foremost

fancies and sentiments

fanciful and chimerical [chimerical = highly improbable]

fantastic and meretricious [meretricious = plausible but false]

fascination and awe

fashion and frivolity

fastidious and exacting

fatigued and careworn

faults and delusions

favors and kindnesses

fear and bewilderment

feasible and practical

feebleness and folly

feeling and passion

felicitous and exquisite

ferocious and mercenary

fertility and vigor

fervor and simplicity

feverishly and furiously

fickle and uncertain

fidelity and zeal

fierce and menacing

fiery and controversial

final and irreversible

finish and completeness

firm and decisive

first and foremost

fitful and capricious

fitting and appropriate

fixity and finality

flaming and mendacious [mendacious = lying; untruthful]

flare and flicker

flatness and insipidity

flattery and toadyism

flexible and spontaneous

flickering and ambiguous

flighty and impetuous

flippant and contemptuous

florid and healthy [florid = ornate; flowery]

flotsam and jetsam

flow and fullness

flowery and figurative

fluctuating and transitory

fluency and flippancy

fluttering and restless

focus and concentrate

fogs and complications

foibles and follies

foiled and defeated

folly and indecorum

fools and underlings

force and effectiveness

formal and cold

formidable and profound