Definition, synonyms and related words
Something that ought to be the case as opposed to already being the case.
"The lights should have been turned off by now, but they are still on."
In plain English: In this context, should is not used as a noun but rather as a verb to express what someone thinks they ought to do or how likely something is to happen.
"The captain had to follow every rule in the ship's should during an emergency."
Ought to; indicating opinion, advice, or instruction about what is required or desirable.
"The report should have included safety data, but it was omitted entirely."
Used to issue an instruction (traditionally seen as carrying less force of authority than alternatives such as 'shall' or 'must').
To make a statement of what ought to be true, as opposed to reality.
In plain English: Should is used to say that something is a good idea, necessary, or expected based on rules or advice.
"You should try to finish your homework before dinner."
The word "should" comes from Old English sċolde, which meant "to owe" or "have to." It is related to the modern word "shall," though its current form evolved through changes in pronunciation and grammar over time.