• kactaid,
• pactaid,
• oactaid,
• lzctaid,
• lsctaid,
• lwctaid,
• lqctaid,
• laxtaid,
• lavtaid,
• laftaid,
• ladtaid,
• laqctaid,
• lactaids,
• laactaid,
• lacctaid,
• lactade,
• Lacctaids,
• Lactoid,
• Laqtaid,
• Lactoaid

• Lactate,
• lactating,
• lactation.

The adjective form of the word "lactaid" is "lactaidic".

The plural form of "lactaid" is "lactaids".

The singular form of the word "lactaid" is "lactaid". The word does not change when going from singular to plural, as it is a proper noun and a brand name for lactose-free dairy products.