Ant. Perplexity, irritation, annoyance, constraint, disquiet, trouble, vexation, difficulty, uneasiness, awkwardness, worry.
Easy. Quiet, comfortable, tranquil, compliant, facile, complacent, submissive; unaffected, natural, smooth; moderate, affluent.
Ant. Disturbed, uncomfortable, hard, difficult, anxious, exacting.
Ebb. Retire, recede, abate, decrease, subside, wane, sink.
Ant. Flow, swell, increase, flood, inundate, deluge.
Eccentric. Irregular, abnormal, uncommon, peculiar, singular, wayward, strange, aberrant, erratic, whimsical.
Ant. Normal, conventional, common, usual, regular, customary.
Echo. Resonance, repetition, reverberation, imitation, answer.
Ant. Sound, voice, original, tone, noise, speech.
Eclipse, n. Obscuration, dimming, obscurity, hiding, shrouding, concealment, vanishing, extinction, obliteration, annihilation, destruction.