All terms in this list:

adamantine: Like the diamond in hardness or luster.

alacrity: eagerness; liveliness; enthusiasm

condone: To forgive, excuse or overlook (something).

conspicuous: Obvious or easy to notice.

cyclical: recurring at regular intervals

dire: evil in great degree; dreadful; dismal; horrible; terrible; lamentable.

eccentric: One who does not behave like others.

eclectic: Selecting a mixture of what appear to be best of various doctrines, methods or styles.

errant: straying from the proper course or standard, or outside established limits

estimable: Worthy of esteem; admirable.

harmony: a pleasing combination of elements, or arrangement of sounds

intimation: Announcement; declaration.

lethal: deadly; mortal; fatal

liberal: A political description, following liberalism.

pinnacle: The highest point.

quantum: Quantity, amount.

rational: Reasonable; not absurd, foolish, emotional, or fanciful.

sanguine: Having the colour of blood; red.

sufficient: Possessing adequate talents or accomplishments; of competent power or ability; qualified; fit.

therapy: Treatment of disease or disability, physical or mental.