Overdo/ˌəʊvərˈduː/ Definition 1 of 3Pro Tip 1/3Avoid Extremes Use 'overdo' to caution against too much of a good thing, which can be harmful or unnecessary. Don't overdo the compliments; they may seem insincere. Pro Tip 2/3Cultural Occasions 'Overdo' often appears when discussing social events where people might go beyond the norm. They really overdid the Halloween decorations this year. Pro Tip 3/3Subtle Criticism 'Overdo' can imply a gentle criticism or advice to take moderation into account. You overdid your joke a bit; some people seemed uncomfortable.