• summins,
• summing,
• sumning,
• zummings,
• eummings,
• wummings,
• symmings,
• shmmings,
• sjmmings,
• s8mmings,
• s7mmings,
• sunmings,
• sukmings,
• sujmings,
• sumnings,
• sumkings,
• sumjings,
• summingz,
• sumings,
• summinz

The adjective form of the word "summings" would be "summing".

The plural form of the word "summings" is "summing"

The plural of the "summings" can be the "summings".

The singular form of the word "summings" is "summing"

The singular of the "summings" can be the "Sum".