When something absolutely has to be done and cannot be put off, use the adjective imperative. Imperative is from Latin imperare to command, and its original use was for a verb form expressing a command: Do it! is an imperative sentence. It's still used that way, but it's more commonly applied to something so pressing it cannot be put off: Hiring new workers has become imperative..
1 A tandem (dual) axle utility trailer starts at $1,200-$3,000 depending on size and weight capacity, and it can cost $4,000-$7,500 or more for commercial-quality utility trailers.
Typical costs: 1  Renting a car trailer can cost $65-$200 or more daily, depending on the size and type (open, enclosed, tandem or tri-axle), and rental length. 2  Buying an open car trailer can cost $2,000-$10,000 or more, depending on length and type; steel trailers typically cost less than aluminum ones, but are heavier to tow.