Words whose meanings contradict one another:

• BILL (“monetary note” and “statement of debt”)
• BUCKLE (“to secure” and “to collapse”)
• CLEAVE (“to separate” and “to bring together”)
• DOWNHILL (“progressively easier” and “progressively worse”)
• DUST (“to add dust” and “to remove dust”)
• FAST (“quick-moving” and “immobile”)
• GARNISH (“to add to” and “to take from”)
• MODEL (“archetype” and “copy”)
• OVERSIGHT (“attention” and “inattention”)
• PEER (“noble” and “person of equal rank”)
• PUZZLE (“to pose a problem” and “to try to solve a problem”)
• SANCTION (“to permit” and “to restrict”)

And TABLE means both “to present for consideration” and “to remove from consideration.”