Synonyms for Should:

n.

may, can, might, could, used to, Cannot. should (noun)
must, ought, need, had better.

v.

have (verb)
must, ought, need.

Other synonyms:

Cannot. used to. could, may. might. can. Other relevant words:
may, Cannot, must, could.

Usage examples for should

  1. I should so like to understand! – Home Again by George MacDonald
  2. And why should you not be? – Sermons on National Subjects by Charles Kingsley
  3. I should say you had. – The Sweep Winner by Nat Gould