unfastidious
adjective
un·fas·tid·i·ous
ˌən-fa-ˈsti-dē-əs
-fə-
: not fastidious : not extremely or excessively careful, selective, difficult to please, etc.
They are … notoriously unfastidious in their appearance, careless about deportment and singularly lacking in ambition.—Tony Jenkins
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Merriam-Webster unabridged
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