Overdrive/ˈəʊvərdraɪv/ Definition 1 of 3Pro Tip 1/3Intense Effort Describes a situation of working very hard or intensely, often temporarily. The team went into overdrive to meet the deadline. Pro Tip 2/3Emotional Peak Used when emotions are heightened, like excitement, anxiety, or anticipation. My heart goes into overdrive when I see my favorite celebrity. Pro Tip 3/3Metaphorical Use Often used metaphorically for any system or process working at its maximum. The rumor mill has gone into overdrive since yesterday's news.