3 adjectives to describe suitability

At present let us be content with knowing that there was no reason for the hat and suit he wore save a mistaken idea of artistic suitability.

We must admit, however, that, whatever pliability of disposition, or other inherent suitability, led to the first domestication of certain species of animals, the changes induced in their natures by many generations of domesticity have made them amenable to man's control to a degree which puts a wide difference between them and their wild relations.

He had only some doubts how far their tastes agreed,probably an absurd condition, in so much as we all know that love is often struck out by opposition, and that there is a pleasant suitability in a husband preferring the head of a herring, and the wife the tail.

3 adjectives to describe  suitability