Pronunciation: (shal; unstressedshul),[key] —auxiliary v., —pres. sing. 1st pers.shall, —2ndshall or ( Archaic ) shalt, —3rdshall, —pres. pl.shall; —past sing. 1st pers.should, —2ndshould or ( Archaic ) shouldst or should•est, —3rdshould, —past pl.should; —imperative, infinitive, and participles lacking. 1. plan to, intend to, or expect to: I shall go later. 2. will have to, is determined to, or definitely will: You shall do it. He shall do it. 3. (in laws, directives, etc.) must; is or are obliged to: The meetings of the council shall be public. 4. (used interrogatively in questions, often in invitations): Shall we go?