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Updated June 2026
Capable of being transmitted from one person or organism to another through various means. Can also describe something that spreads rapidly or influences others, such as enthusiasm or laughter.
“Her infectious laughter soon had everyone in the room smiling.”
/ɪnˈfɛk.ʃəs/
in·fec·tious
10-letter medical/social term ending in -OUS; contains F and C
Worth 18 points; high-value letters F and C boost the score
Change a single letter of “infectious” to make these 10-letter words — useful for Wordle and crossword clues.
Look up infectious in an authoritative dictionary for full definitions, pronunciation, and etymology.
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