Q: Is dirt unclean matter? ¶
A: Yes, and especially when in contact with a person's clothes, skin or possessions when they are said to become dirty.
Q: Is dirt streaks and detritus that may be removed by ordinary daily cleaning? ¶
Q: Is dirt ingrained stains or physical damage to an object? ¶
A: Yes, and which require major renovation to remove.
Q: Is dirt that which results from design decisions such as decor in dirty orange or grunge styling? ¶
Q: Was dirt sponsored by the Wellcome Trust in 2011? ¶