Words similar to proper

Example sentences for: proper

How can you use “proper” in a sentence? Here are some example sentences to help you improve your vocabulary:

A third party may deliver a letter if proper postage is affixed and canceled.
The total metropolitan population stands at 2 million, of which half live in the city proper.
It was then kept at proper temperature (depending on the melting temperature of each probe) for one hour to perform annealing, for probe (GT) 15 at 60°C, (AT) 15 at 37°C, and (GA) 15 at 57°C.
Anyone who doubts the impact of the proper use of simple language should read (or reread) Knut Hamsun's Growth of the Soil . Though a translation, it puts English polysyllabicity to shame.
One of the 18 negative controls was discarded because no lane gave rise to a sharp band of the proper size.