HackerVoca

: inapt, unsuitable, inappropriate
infamous : notorious / adjective
famous or well-known for something bad: a notorious bandit
[+ for]: The region is notorious for its terrible snowstorms.
notoriously adverb : a notoriously inefficient company
famous, disgraceful
infectious adjective

1 an infectious illness can be passed from one person to another, especially through the air you breathe : highly infectious: There seems to be a highly infectious type of flu going around.

2 someone who is infectious has an illness and could pass it to other people

3 infectious feelings or laughter spread quickly from one person to another: Her giggles were infectious and soon we were all laughing.

infectiously adverb
infectiousness noun [uncountable] : contagious, communicable