›severe and sudden, or having very noticeable effects: He is not under pressure from his own electorate to do anything drastic.a drastic decline/drop/reduction in sthtake drastic action/measures/stepsThe company is taking drastic action to reduce its debt by $14.3 billion.drastic changes/cuts in sth
drasticallyadverb›The manufacturer will also report drastically reduced turnover of £3.5m in the year to this month.