nious, ingenuous intelligent, intellectual
insinuation, innuendo instinct, intuition
involve, implicate irony, sarcasm
irretrievable, irreparable

judicious, judicial just, equitable
justify, warrant

lack, want languor, lassitude
later, latter lawful, legal
lax, slack leave, let
lend, loan liable, likely
libel, slander lie, lay
like, love linger, loiter
look, see loose, lose
luxurious, luxuriant

majority, plurality marine, maritime
martial, military moderate, temperate
mood, humor moral, ethical
moral, religious mutual, reciprocal
myth, legend

natal, native nautical, naval
near, close necessaries, necessities
needy, needful noted, notorious
novice, tyro

observance, observation observe, perceive
obsolete, archaic omnipresent, ubiquitous
on, upon oppose, resist
opposite, contrary oppress, depress

palliate, extenuate passionate, impassioned
pathos, pity patron, customer
peculiar, unusual perspicuity, perspicacity
permeate, pervade permit, allow
perseverance, persistence pertain, appertain
pictorial, picturesque pitiable, pitiful
pity, sympathy pleasant, pleasing
politician, statesman practicable, practical
precipitous, precipitate precision, preciseness
prejudice, bias prelude, overture
pride, vanity principal, principle
process, procedure procure, secure
professor, teacher progress, progression
propitious, auspicious proposal, proposition
tradition, legend truth, veracity

quiet, quiescent

raise, rear raise, rise
ransom, redeem rare, scarce
reason, understanding reasonable, rational
recollect, remember regal, royal
reliable, trustworthy requirement, requisite
restive, restless reverse, inverse
ride, drive rime (or rhyme), rhythm

sacred, holy salutation, salute
scanty, sparse scholar, student
science, art scrupulous, conscientious
serf, slave shift, expedient
sick, ill silent, taciturn
sit, set skilled, skilful
slender, slim