watch·word 
(wŏchwûrd′)
(wŏchwûrd′)n.
1. A prearranged reply to a challenge, as from a guard or sentry; a password.
2. A rallying cry: Let our watchword be freedom.
- deoxy-
- deoxycorticosterone
- deoxygenate
- deoxygenation
- deoxyribonuclease
- deoxyribonucleic acid
- deoxyribonucleoside
- deoxyribonucleotide
- deoxyribose
- dep.
- depart
- departed
- department
- departmental
- departmentalization
- departmentalize
- departmentally
- department store
- departure
- depauperate
- depauperation
- depend
- dependability
- dependable
- dependableness