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.
1 Enclosed car trailers (solid sides and roof, usually with a rear that folds down as a ramp) sell for $6,000-$20,000 or more, depending on size, capacity, type of hitch (bumper pull or gooseneck) and materials (steel or aluminum). Expect to pay $3,000-$15,000 or more for a dual-axle enclosed cargo trailer depending on size, materials and options. 2  These are typically bumper-pull trailers.