catching
adjective /ˈkætʃɪŋ/
  /ˈkætʃɪŋ/,  /ˈketʃɪŋ/
[not before noun]- (of a disease) easily caught by one person from another synonym infectious
- (of an emotion or a mood) passing quickly from one person to another synonym infectious- Try to be as enthusiastic as possible (enthusiasm is catching)!