infectious
Translation
infectious, contagious, catching
Examples
Flu is an infectious disease.
Flu is an infectious disease.
Her laughter is infectious.
Her laughter is infectious.
Grammar Patterns
an infectious ((disease/illness)) a disease that can be passed from one person to another Flu is an infectious disease.
Similar Words
Synonyms: contagious, communicable; (figurative) catching
Etymology
From 'infect' + '-ious', an adjective-forming suffix meaning 'characterised by' or 'full of'.
Memory Tips
The '-ious' suffix means 'full of'. So, something 'infectious' is 'full of infection' and can be passed on, like a disease or a good mood.