Left unprovided for can be replaced with various synonyms depending on the context and tone of the sentence. Alternatives could include 'unprepared', 'neglected', 'abandoned', 'overlooked', 'without support', 'deprived', 'unaided', 'unsupported' or 'unsustained'. Each word provides a unique shade of meaning that can convey a different emotion or connotation to the sentence. 'Left unprovided for' can have negative connotations that imply a lack of attention or care, whereas 'unsupported' could suggest an absence of resources or outside assistance. By using synonyms, you can add more color and nuance to your writing, while making it more varied and engaging to read.