"To waste any words" means to use words or speak unnecessarily, without adding any useful information or value to a conversation or situation. It implies that the words being used are not important or helpful. Full definition
When writing your statement of purpose, don't waste words. (entrepreneur.com)
Overall, this resume stands out as a good example because it is efficient, wasting no words on bulky constructions or passive language. (resume-now.com)
It starts with an overview and moves right into accomplishments and skills of the writer without wasting words or drawing things out. (resume-now.com)