All nail-down synonyms

noun nail-down

• cinch — If you say that something is a cinch, you mean that you think it is very easy to do.
• clinch — If you clinch something you are trying to achieve, such as a business deal or victory in a contest, you succeed in obtaining it.
• lock in — a device for securing a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a key, dial, etc.
• pin down — a small, slender, often pointed piece of wood, metal, etc., used to fasten, support, or attach things.