• blks,
• bulck,
• volks,
• buks,
• balcks,
• buckes,
• blaks,
• bluks,
• baulbs,
• bults,
• bulps,
• bullky,
• balnks,
• buls,
• builbs,
• bullk,
• bulkly,
• bules,
• rulkes,
• buckls

• bullace,
• bullish,
• bulk,
• bunks,
• Sulks,
• bullis,
• bulges,
• balks,
• Bulluck,
• bulls,
• bulky,
• bucks,
• bullock,
• Bulloch.

The adjective form of the word "bulks" is "bulky".