proper

the proper time to plant potatoes

a very proper young lady

, II.1.3:

They have a proper saint almost for every peculiar infirmity: for poison, gouts, agues […].

These are divided into two great families, the vipers proper (Viperidae) and the pit-vipers (Crotalidae).

proper motion — proper left — proper right

proper subset — proper ideal

Now that was a proper breakfast.

The same tyme was Moses borne, and was a propper [translating ἀστεῖος (asteîos)] childe in the sight of God, which was norisshed up in his fathers housse thre monethes.

Though unusual in the Dublin area he knew that it was not by any means unknown for desperadoes who had next to nothing to live on to be abroad waylaying and generally terrorising peaceable pedestrians by placing a pistol at their head in some secluded spot outside the city proper[…].

When I realized I was wearing my shirt inside out, I felt a proper fool.