A
adhesive / adherent
alternate / alternative
appreciable / appreciative
apprehensible / apprehensible
argumentative / arguable
arrant / errant
B
beneficial / beneficent
C
careful / caring
climatic / climactic
comparable / comparative
cosiderable / considerate
comparable / comparative
conscious / conscientious
contemptible / contemptuous
continual / continuous
credible / credulous / creditable
competitive / competent
comprehensible / comprehensive
classic / calssical
childish / childlike
confident / confidential
contemptible / contemptuous
comparable / comparative
D
desiralbe / desirous
definite / definitive
disinterested / uninterested
distinct / distinctive
E
economic / economical
effective / affective
envious / enviable
exceptional / exceptionable
exciting / excitable
exclusive / exclusionary [iksklúːʒənèri]
extended/extensive
F
farther / further
forceful / forcible
famous / infamous
G
graceful / gracious
H
healthy / healthful
historic / historical
honorable / honorary
I
imaginable / imaginary / imaginative
immoral / unmoral / amoral
imperial / imperative
impressive / impresible / impressionable
industrial / industrious
informed / informative
ingenious / ingenuous
intelligent / intellectual / intelligible
invaluable / valueless
L
literal / literary / literate
luxurious / luxuriant
M
memorable / memorial
momentary / momentous
mythic / mythical
N
negligible / negligent
P
politic / political
popular / populous
priceless / pricy
practical / practicable
prospective / prosperous
R
reliable / reliant
repairable / reparable
responsible / responsive
respective / respectful / respectable
regretful / regrettable
rural / rustic
S
satisfactory / satisfying
sensual / sensuous / sensitive / sensible / sensational
social / sociable / societal
spacious / spacial (spatial)
special / specific
successful / successive
substantial / substantive
T
tentative / temporary
terrible / terrific
tolerant / tolerable
U
understanding / understandable