ever

Concise Oxford English Dictionary © 2008 Oxford University Press:
ever/ˈevə(r)/

▶adverb

• 1 [usu. with neg. or in questions] at any time.

  ■ used in comparisons for emphasis.

• 2 at all times; always.

• 3 increasingly; constantly.

• 4 used for emphasis in questions expressing astonishment or outrage.

– phrases
ever and anon archaic occasionally.
ever since throughout the period since.
ever so (or such) Brit. informal very; very much.

– origin OE ǣfre, of unknown origin.