1) Foreknow 2) Foresee 3) Forewarn 4) Warn 1) Forewarn 2) Give an early warning 3) Realize beforehand 4) To foresee 5) To forewarn 6) Warn 7) Warn in advance or beforehand 
• (v. t.) To inform beforehand; to warn. • (v. t.) To foresee.
Pre·vise' transitive verb [ Latin praevisus , past participle of praevidere to foresee; prae before + videre to see. See Vision .] 1. To foresee. [ R.] 2. To inform beforehand; to warn. Ld. Lytton. 
previse 1. To foresee or to forewarn. 2. Etymology: from Latin praevisus, past participle of praevidere, 'to foresee'; from pre-, 'before' + videre, 'to see'.
foreknow verb realize beforehand
to foresee. · to forewarn.
realize beforehand