• nomatter,
• nomater,
• bo matter,
• mo matter,
• jo matter,
• ho matter,
• ni matter,
• nk matter,
• nl matter,
• np matter,
• n0 matter,
• n9 matter,
• no natter,
• no katter,
• no jatter,
• no mztter,
• no mstter,
• no mwtter,
• no mqtter,
• no marter

The adjective form of "no matter" is "regardless".

The word "no matter" does not have a plural form. It remains the same in both singular and plural usage.

The singular form of the word "no matter" is "matter"