Student or Learner
According to one dictionary, felicitous means very suited for some purpose or situation.
I would like to make up three sentences with the word.
(1) I have to make a felicitous judgement about which method is the best for learning how to swim.
(2) There is a set of shapes, including a circle, a square, a rectangle, a diamond, a triangle and so on. I need to make a felicitous arrangement of these shapes to produce a nice picture.
(3) I have come up with a felicitous strategy for settling their argument.
Could someone please tell me whether I am using the word correctly? I have some trouble with this word. Thanks.
You're using it well. Felicity means happiness.
However, it's not commonly used and is usually a poor word choice for conversational English.