Related Clues:

• Put 2 and 2 together
• Lengthen (with "to")
• Ancient pyramid builders
• Intrude
• Word found on a dipstick
• Also say
• Cookbook verb
• Interrupt on the dance floor
• Toss in
• Toss into the mix
• Yeltsin's successor as leader of Russia
• Verb used in recipes
• Gibe, with 'up'
• Russia's second president
• Keep talking