Infra dig
Definition 1 of 1
Pro Tip 1/3Dignity Matters
Use 'infra dig' when emphasizing that an action is too low for someone's social position or reputation. 
He considered serving his own guests utterly infra dig.
Pro Tip 2/3Subtle Snobbery
'Infra dig' often implies a sense of snobbery or a superiority complex in the speaker. 
She found attending the local fair quite infra dig.
Pro Tip 3/3Not for Everyday
'Infra dig' is not common in modern everyday language and may not be understood by all. 
Most of his classmates found the term 'infra dig' rather obscure.