Vocabulary

quickness; alacrity

nimble; agile; quick

reason for concern

uneasy

uneasiness; uncertainty; anxiety; apprehension; restlessness; insecurity

ignorance; inexperience; unfamiliarity

vulgar; unrefined

surprise examination

constancy; immutable

disadvantageous; harmful; unprofitable

Very sincerely yours

discrepancy; discord; disagreement; mismatch; dissonance

poor results

divorce

dissidents; troublemakers; disturbing elements

inflammatory pamphlets

irreversible

(papal) infallibility

invisibility

invisible ray

non-aggression pact; non-aggression treaty

unknowable; mysterious

agnostic

agnosticism

impenetrability

unavailable choice

noninvolvement; nonintervention; neutrality

nonexpansion; localization; localisation; nonaggravation

unshapely; ill-formed; misshapen

failure; defeat; mistake; blunder; negligence; indiscretion

pitcher's misjudgment (misjudgement)

crying in spite of oneself

shallow thinker; indecisive person

inactivity

inert; noble; neutral

inert gas

inaction; lethargy

intolerance

abstention; nonintervention; noninterference

sexual frigidity