obstinacy <> tractability

obstreperous <> disciplined obstruct <> facilitate

obstructed <> unoccluded

obtuse <> insightful

obtuseness <> acumen

occluded <> unobstructed

occult <> bare

occult <> manifest

odium <> esteem

odium <> infatuation

offbeat <> bathetic

offbeat <> conventional

offbeat <> hackneyed

offhand <> premeditated

模糊的  <> 显然的

倔强的  <> 温顺的

吵闹的，暴乱的  <> 遵守纪律的
阻碍  <> 促进

阻塞的  <> 不阻塞的

愚笨的  <> 有深刻见解的

愚笨  <> 敏锐

闭塞的  <> 不闭塞的

神秘的  <> 无遮蔽的

神秘的  <> 明白的

憎恨  <> 尊重

憎恨  <> 迷恋

离奇的  <> 平庸的

反传统的  <> 传统的