Infectious

Pronunciation: /ɪnˈfɛkʃəs/

Definitions of infectious

adjective causing or capable of causing infection; communicable

Example Sentences

A1 The baby's laughter was infectious.

A2 Her positive attitude is infectious and spreads to everyone around her.

B1 The infectious disease spread rapidly throughout the community.

B2 The band's music had an infectious energy that got the crowd dancing.

C1 His infectious enthusiasm for the project inspired the entire team.

C2 The professor's infectious passion for the subject made his lectures engaging and memorable.

Examples of infectious in a Sentence

formal The infectious disease spread rapidly throughout the community.

informal Her laughter was so infectious, everyone in the room couldn't help but smile.

slang That new song is so catchy, it's infectious!

figurative His positive attitude was infectious, spreading to everyone around him.

Grammatical Forms of infectious

• past tense: infected
• plural: infectiouses
• comparative: more infectious
• superlative: most infectious
• present tense: infects
• future tense: will infect
• perfect tense: have infected
• continuous tense: is infecting
• singular: infectious
• positive degree: infectious
• infinitive: infect
• gerund: infecting
• participle: infected

Origin and Evolution of infectious

First Known Use: 1500 year

Language of Origin: Latin

Story behind the word: The word 'infectious' originated from the Latin word 'infectiosus', which is derived from the verb 'inficere' meaning 'to stain, taint, or infect'.

Evolution of the word: Initially, 'infectious' was used in a literal sense to describe the spread of disease or contamination. Over time, the word has evolved to also describe the contagious nature of emotions, ideas, or behaviors.