The phrase "blighting glance" typically refers to a sudden, intense look that suggests disapproval or negativity. If you're searching for alternative words or phrases to express this concept, you could consider synonyms like scowl, sneer, glare, frown, or icy stare. Other options might include words like withering, venomous, or hostile, all of which capture the sudden and harmful impact of such a glance. Whatever term you choose as a substitute for "blighting glance," be sure it accurately conveys the sense of negativity and disapproval you're looking to express.