1) As a backup 2) As a backup plan 3) As a plan B 4) As a precaution 5) Case 6) Encase 7) Enclose 8) For the contingency that 9) If there is a need 10) Inclose 11) Just followers 12) Lest 13) Nice as a precaution 14) Protein found in milk 15) Provisional words 16) Should 17) Should it happen that 18) Shut in 1) Encase 
• (v. t.) To inclose in a case; to inclose; to cover or surround with something solid.
In·case' transitive verb [ imperfect & past participle Incased ; present participle & verbal noun Incasing .] [ French encaisser ; prefix en- (L. in ) + caisse case. See Case a box, and confer En...
Incase: A term once used to refer to the medical case of an inpatient.