Sleeper
nounverified·updated May 18, 2026
a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal
polysemousWordset Dictionary
Senses
Wordset Dictionary
an unexpected hit
Wordset Dictionary
tropical fish that resembles a goby and rests quietly on the bottom in shallow water
Wordset Dictionary
a piece of furniture that can be opened up into a bed
Wordset Dictionary
pajamas with feet
Wordset Dictionary
a passenger car that has berths for sleeping
Wordset Dictionary
one of the cross braces that support the rails on a railway track
Wordset Dictionary
a rester who is sleeping
Wordset Dictionary
an unexpected achiever of success
Classifications
Entity Type
Unknown—glossary_import_default_pending_classifier
?unassignedlast reviewed —
Sensitivity
unclassified
Information Class
unclassified
Variants
- synonym
- crosstierailroad tiesleeper gobysleeping carslumberertiewagon-lit
- plural
- Sleepers
- possessive
- Sleeper's
- pluralpossessive
- Sleepers'