accelerate speed up acceleration operate operation operator liberate liberal liberty The Statue of Liberty自由女神 satisfy satisfaction satisfactory unsatisfactory satisfied dissatisfied classify classification clear clarify clarity clarification simple simplify quality qualify qualified qualification human quality quantity realize realization special specialize specialization recognize apology apologize considerate considerate guy consideration adequate inadequate approximate reliable unreliable reliability reasonable unreasonable considerable a considerable number stable steady available unavailable alter alternative anxious anxiety uneasy nature natural nation national international nationality additional additionally internal external approve approval betrayal betray handful painful no pains no gains hopefully peaceful inner peace skillful skilled fantastic excellent extraordinary extraordinarily significant significance significantly brilliant brilliance participant participate participation merchant astonish astonishing astonished polish apply applicant application engage engagement appoint appointment disappoint disappointment disappointing assign assignment home assignment embarrass embarrassment stadium museum amuse amusing amusement music medium media immediate immediately nursery nurse surgery surgeon physician physicist physical