Word Forms of "letterbox" (8 forms)

Adjective

Form	Word
Alternative	letter box

Alternativeletter box

Noun

Form	Word
Alternative	letter box
Plural	letterboxes

Alternativeletter box

Pluralletterboxes

Verb

Form	Word
Alternative	letter box
Participle, Past	letterboxed
Participle, Present	letterboxing
Past	letterboxed
Present, Singular, Third-Person	letterboxes

Alternativeletter box

Participle, Pastletterboxed

Participle, Presentletterboxing

Pastletterboxed

Present, Singular, Third-Personletterboxes

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.