Facetious
cleverly amusing in tone
Facile
performing adroitly and without effort
Fallow
left unplowed and unseeded during a growing season
Fastidious
giving careful attention to detail
Fatuous
devoid of intelligence
Filial
designating the generation following the parental generation
Foment
try to stir up
Fracas
a noisy quarrel
Fractious
easily irritated or annoyed
Fulminate
criticize severely
Gaffe
a socially awkward or tactless act
Galvanize
stimulate to action
Garish
tastelessly showy
Garrulous
full of trivial conversation
Germane
relevant and appropriate
Glib
marked by lack of intellectual depth
Gregarious
temperamentally seeking and enjoying the company of others
Guile
the use of tricks to deceive someone
Gumption
fortitude and determination
Halcyon
idyllically calm and peaceful; suggesting happy tranquility
Hallowed
worthy of religious veneration
Hapless
unfortunate and deserving pity
Harbinger
something indicating the approach of something or someone
Histrionic
overly dramatic or emotional
Hoary
having gray or white hair as with age
Iconoclast
someone who attacks cherished ideas or institutions
Imbroglio
an intricate and confusing interpersonal situation
Impecunious
not having enough money to pay for necessities
Impregnable
incapable of being attacked or tampered with
Impunity
exemption from punishment or loss
Inane
devoid of intelligence
Incipient
only partly in existence; imperfectly formed
Incorrigible
impervious to correction by punishment
Indelible
not able to be forgotten, removed, or erased
Ineffable
defying expression or description
Inexorable
impossible to prevent, resist, or stop
Iniquity
absence of moral or spiritual values
Inscrutable
difficult or impossible to understand
Insidious
working or spreading in a hidden and usually injurious way
Insouciant
marked by unconcern
Interminable
tiresomely long; seemingly without end
Intrepid
invulnerable to fear or intimidation
Jaunt
a journey taken for pleasure
Knave
a deceitful and unreliable scoundrel
Knell
the sound of a bell rung slowly to announce a death
Lachrymose
showing sorrow
Languid
lacking spirit or liveliness
Lassitude
weakness characterized by a lack of vitality or energy
Laudable
worthy of high praise
Leviathan
the largest or most massive thing of its kind
Levity
a manner lacking seriousness
Lilliputian
very small
Limpid
clear, bright
Listless
lacking zest or vivacity
Loquacious
full of trivial conversation
Lugubrious
excessively mournful