dead letters
Addresses unknown, returned
Dead letters are mail that cannot be delivered or returned to the sender—typically because of illegible addresses, insufficient postage, or untraceable recipients.
Postal services collect such items in a dead letter office.
Figuratively, a dead letter is a law, agreement, or principle that remains technically in force but is no longer observed or enforced: The treaty has become a dead letter.
Not brought to destination
- unclaimedNot yet taken
- unreadNot yet perused
- mailroomDelivery processing area
- sortingArranging into sequence
postmaster · forwarding · addressee · correspondence · envelopes · parcels · packages · postage
Left behind completely
- forgottenNo longer recalled
- discardedGotten rid of
- overlookedNot noticed or considered
- ignoredPurposely not noticed
dusty · languishing · forsaken · unattended · unopened · unacknowledged · piled · accumulating
Hints toward answers
- cipherHidden writing system
- codeSymbolic communication system
- secretsConcealed information
- puzzleChallenge testing ingenuity
cryptic · thriller · suspense · intrigue · investigation · evidence · unsolved · whodunit
Period following loss
- griefIntense sorrow from loss
- absenceState of not being
- longingIntense, persistent desire
- missed connectionsFailed encounters with potential significance
unspoken · final words · regret · what-ifs · separation · farewell · goodbye · silence
Stored historical records
- manuscriptsHandwritten or typed originals
- documentsFormal written records
- epistolaryPertaining to letter-writing
- parchmentTreated hide for manuscripts
handwritten · calligraphy · inkwell · quill · seal · wax · correspondence · philately
undelivered
Not brought to destination
sorting · postmaster · forwarding · addressee · correspondence · envelopes · parcels · packages · postage · stamps
abandoned
Left behind completely
- forgottenNo longer recalled
- discardedGotten rid of
- overlookedNot noticed or considered
ignored · dusty · languishing · forsaken · unattended · unopened · unacknowledged · piled · accumulating · backlog
clues
Hints toward answers
puzzle · cryptic · thriller · suspense · intrigue · investigation · evidence · unsolved · whodunit · detective
mourning
Period following loss
missed connections · unspoken · final words · regret · what-ifs · separation · farewell · goodbye · silence · void
archive
Stored historical records
- manuscriptsHandwritten or typed originals
- documentsFormal written records
- epistolaryPertaining to letter-writing
parchment · handwritten · calligraphy · inkwell · quill · seal · wax · correspondence · philately · antiquarian
- postal servicepost office, mail, sorting machine, stamps, stamp
- postal historystamps, postmarks, postmaster, postage, postmark