Related Clues:

• 'That's half a century like this, too (4)'
• A half a hundred like this sounds like two
• 'New T's, as in waters (4)'
• Fifty of them in water could never make them right
• 'Over in England, too (3)'
• This needs thy addition to be biting as well
• Some Boolean-logic operators
• Part of a.k.a
• It makes a lot of connections
• Connector that completes a phrase made from the starts of the three longest across answers
• 'Keep talking ...'
• ''And don't forget . . .''
• In addition, too
• "Not to mention . . ."
• Took the end off as well