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Definition of poster
poster
/ˈpoʊ.stɚ/
pos · ter
Plural:posters
poster Lexical Profile
CEFR
A2
Grade
3
Tier
1
Usage
Top 5k
poster Game Scores & Validity
Scrabble US
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WWF
Wordle Guess
• noun
1
A large printed picture, notice, or advertisement designed to be attached to a wall or vertical surface for decoration or public display.
Example
"She decorated her university dormitory room with a vintage movie poster and several landscape photographs."
2
A person who publishes a message, article, or piece of content on an online forum, social media platform, or blog.
Example
"The original poster updated the thread with a working solution to the software bug."
Synonyms
View all synonyms for poster Antonyms
View all antonyms for poster• Rhymes for poster
Word Origin & Etymology
Mid-19th century: formed from the verb 'post' (to affix a notice to a physical post) combined with the suffix '-er'. Originally referring to a person who put up handbills, the meaning soon evolved to describe the large printed notice itself.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Poster. In Wordmom Dictionary. Retrieved Oct 20, 2026, from https://wordmom.com/dictionary/poster