Reading University researchers claim "I", "we", "two" and "three" are among the most ancient, dating back tens of thousands of years.
Their computer model analyses the rate of change of words in English and the languages that share a common heritage.
The team says it can predict which words are likely to become extinct - citing "squeeze", "guts", "stick" and "bad" as probable first casualties.
Which words do you think deserve to last forever? Which would you expunge tomorrow if you could? Today I'm enjoying 'unctuous' (sadly more Latin than English).