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lethargicallyLethargize
Lethargy
Lethe
Lethean
Letheed
Letheon
Letheonize
Lethiferous
Lethy
Leto
Lette
Letter
letter bomb
letter bond
Letter book
-- letter box --
letter carrier
letter case
Letter cutter
Letter lock
Letter missive
Letter of advice
Letter of attorney
Letter of credence
letter of credit
letter of intent
Letter of Jeremiah
Letter of license
letter of mark and reprisal
letter of marque
Letter of marque and reprisal
Letter of recall
letter box
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| Noun | 1. |  letter box - a numbered compartment in a post office where mail is put to be called for |
| 2. |  letter box - public box for deposit of mail | |
| 3. |  letter box - a private box for delivery of mailSynonyms: mailbox |