since

the best/greatest thing since sliced bread (humorous)

if someone or something is described as the best thing since sliced bread, people think they are extremely good, often better than they really are. Portable phones are marketed as the best thing since sliced bread, but to me they're just another expensive gadget. The way he goes on about her - you'd think she was the greatest thing since sliced bread.

See also: best, bread, great, slice, thing

from/since the year dot (British & Australian, American)

for a very long time. Children have been fascinated by ghost stories since the year dot.

See also: dot, from, year

from/since time immemorial (literary)

for longer than anyone can remember. Her family had farmed that land from time immemorial.

See also: from, time

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the greatest thing since sliced bread

wonderful. My kids think their new puppy is the greatest thing since sliced bread.

See also: bread, great, slice, thing

since when

for how long have you believed. Since when do you have the right to tell me what to do? But really, since when is $250 too expensive for a nice watch?

Usage notes: used in the form of a question when you do not believe a particular attitude or situation is right or true