Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
   
Display options
Show syllables
Show Lookup History
Double-Click Lookup
  Show Spanish support
 
Pronunciation
Wordsmyth
  Phonics
  IPA
 
Entry formats
Standard
  Classic
 
Lookup History
infectious

in·fec·tious

infectious

 
 
pronunciation:
ihn fek shs
features:
Word Explorer
part of speech: adjective
definition 1: able to be given to others by infection.
We had to keep the cat by itself for six weeks because its disease was infectious.
synonyms:
communicable, contagious
similar words:
catching, septic, toxic
definition 2: spreading easily as though by infection.
He has such an infectious smile!
synonyms:
catching
similar words:
communicable, compelling, irresistible
derivations: infectiously (adv.), infectiousness (n.)
Word Explorer
See
  disease, virus