1. grade grubbing - Noun
2. grade grubbing - Adjective
grade grubbing (uncountable)
(US, slang, derogatory) The practice of students (especially those in college) attempting to negotiate or suck up for better grades.
grade grubbing (comparative more grade grubbing, superlative most grade grubbing)
(US, slang, derogatory) Engaging in grade grubbing.