• arctictis,
• zrctotis,
• srctotis,
• wrctotis,
• qrctotis,
• aectotis,
• adctotis,
• afctotis,
• atctotis,
• a5ctotis,
• a4ctotis,
• arctoitis,
• arcotis,
• arctots,
• arctottis,
• arctotys,
• arkotis,
• arctiots,
• arctos,
• arctoids

• arctiid,
• Arctic Skua,
• arctic,
• aristocrat,
• arctium,
• arcturus,
• arctonyx,
• arctocebus,
• aristocort,
• arctiidae,
• arctictis.

The plural form of the word "arctotis" is "arctotises".

The singular form of the word "arctotis" is still "arctotis". The word does not change when going from plural to singular.