Learn English – Word to describe “concealing” positive emotions, in fear of being perceived as irrational

single-word-requestsvocabulary

This will be a bit hard to explain, but I'll give it a shot.

I am looking for a good word to describe: A person hiding his intense positive enthusiasm and excitement for something, as to not seem overly excited and hence being perceived as emotional or irrational. This person is afraid that his excitement might generate some sort of mistrust with the cautious person who will decide if he will be able to experience what he is exited about or not.

Example sentence:

"He is a true pragmatist; one who takes on new challenges with great, yet [word here] enthusiasm."

I have been thinking about using concealed, reserved, humbled, restrained and modest, but I feel like those words come with a sort of negative undertone, as if the person is harbouring some kind of hidden agenda, which is not what I want to say. Any suggestions?

Best Answer

Words like seemly, proper, careful, knowing, canny, shrewd, astute, and decorous may fit. With slight rewording, phrases like with appropriate reserve, in reasoned measure, carefully proportioned, and not unseemly can be made to work. Of the above, canny ("careful, prudent, cautious" or "knowing, shrewd, astute") may serve best, because of its connotations of conscious, knowing insight and an eye to the main chance.