1The elusive nature of happiness has been a subject of philosophical inquiry for centuries.
2Despite their best efforts, the detectives were unable to track down the elusive suspect, who seemed to vanish into thin air.
3The artist's use of light and shadow created an elusive atmosphere in the painting, making it difficult to discern the subject's true emotions.
4The concept of time is notoriously elusive, and its measurement has been the subject of much debate among physicists and philosophers.
5The elusive smile of the Mona Lisa has been the subject of endless speculation and interpretation, with some art historians arguing that it is a sign of happiness and others of sadness.