should

1. (v) Ought to; indicating opinion, advice, or instruction, about what is required or desirable. 2. (v) Used to give advice or opinion that an action is, or would have been, beneficial or desirable. 3. (v) Used to issue an instruction (traditionally seen as carrying less force of authority than alternatives such as 'shall' or 'must'). 4. (v) Ought to; expressing expectation. 5. (v) Indicates that something is expected to have happened or to be the case now. 6. (v) Will be likely to (become or do something); indicates a degree of possibility or probability that the stated thing will happen or be true in the future. 7. (v) Used to express what the speaker would do in another person's situation, as a means of giving a suggestion or recommendation. 8. (v) In questions, asks what is correct, proper, desirable, etc. 9. (v) (informal) With verbs such as 'see' or 'hear', usually in the second person, used to point out something remarkable in either a good or bad way. 10. (v) To suggest (that someone ought to do something, or that something ought to be the case) by, or as if by, using the word should. 11. (n) Something that ought to be the case as opposed to already being the case. 12. (v) (subjunctive) Used to form a variant of the present subjunctive, expressing a state or action that is hypothetical, potential, mandated, etc. 13. (v) (formal or literary) Used to express a conditional outcome. 14. (v) (formal or literary outside certain combinations such as with 'imagine' or 'think') Used to impart a tentative, conjectural or polite nuance. 15. (v) An alternative to would with first person subjects. 16. (v) To make a statement of what ought to be true, as opposed to reality.