Absence of adornment synonyms

What is another word for Absence of adornment?

• simplicity
• plainness
• lack of adornment
• lack of decoration
• absence of decoration
• austerity
• spareness
• clean lines
• absence of ornament
• absence of ornamentation
• lack of ornament
• lack of ornamentation
• absence of embellishment
• lack of embellishment
• unpretentiousness