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 Tandem axle boat trailers 18'-25' long typically cost $1,800-$5,000 or more, for use with larger and heavier fishing boats, sailboats or power boats. 2  For example, the 18'-20' tandem-axle Bear LTV 72-20TG for aluminum or fiberglass bass boats sells for about $2,000.