Related Clues:

• Get bigger
• Do arithmetic
• Put into the mix
• Put in with the rest
• Say more
• Enlarge, as one's lead
• Double or triple, say
• Put 2 and 2 together
• Lengthen (with "to")
• Ancient pyramid builders
• Beef up
• Word found on a dipstick
• Also say
• Cookbook verb
• Toss in