words that start with 'F' or 'I' that I get confused with

fervid

excessively energetic or eager

fervent

exhibiting enthusiasm and zeal

frivolous

• lacking in seriousness or importance; silly

• (of a person) not taking things seriously

fortuitious

happening by chance, especially a lucky chance

fervor

intense enthusiasm toward something

furtive

sneaky or secretive, especially due to guilt

felicitous

• well-suited or apt

• causing delight or satisfaction

fraught

filled with tension, stress, or negative emotions

incendiary

provocative; causing conflict

inimical

damaging; hostile in manner or tone

impetuous

rash or hasty in action or decision

imperious

having an arrogant or domineering manner

impugn

challenge the truth or honesty of something

iconoclastic

challenging or overthrowing tradition or established beliefs

idiosyncratic

peculiar to an individual or group; unique

irresolute

uncertain or lacking determination

irreverent

lacking proper respect or seriousness

impertinent

• disrespectful or inappropriate

• irrelevant or unrelated to something

impudent

not showing due respect; bold-faced, impertinent

insolent

boldly disrespectful or rude

ingenuous

naive and lacking experience

ingenious

showing originality or sagacity; witty

fringe

unconventional, extreme, or marginal

feint

a deceptive movement or action

foment

incite or cause troublesome acts; encourage

fortitude

mental strength and courage that allows one to face challenges

futile

incapable of resulting in anything worthwhile

feckless

without skill, ineffective, incompetent

foolhardy

recklessly daring; careless

fecund

fertile or highly productive

fastidious

showing great care and attention to detail; hard to please

fractious

quarrelsome and irritable; unruly

factious

causing division or disagreement

fungible

interchangeable for another item of a similar type

indolent

habitually lazy; averse to activity

intrepid

resolutely fearless; brave

invidious

• likely to cause resentment or envy

• unfair; prejudiced against someone or something

inscrutable

not easily understood; mysterious

inundate

flood or overwhelm

indignant

feeling or expressing strong displeasure at something unjust or offensive

immure

imprison or isolate

implicit

suggested though not directly expressed

imperturbable

not easily annoyed, upset, or excited; calm