S1E1N1T1I1N1E1L1
8 points
SENTINEL is validvalid
to stand guard [v SENTINELED, SENTINELING, SENTINELLED, SENTINELLING, SENTINELS]
to stand guard [v SENTINELED or SENTINELLED, SENTINELING or SENTINELLING, SENTINELS] / a person, such as a sentry, assigned to keep guard, also CENTINEL, CENTINELL, CENTONEL, CENTONELL [n -S]