significant
adjective OPAL WOPAL S
  /sɪɡˈnɪfɪkənt/
  /sɪɡˈnɪfɪkənt/
- large or important enough to have an effect or to be noticed
- There are no significant differences between the two groups of students.
 - Your work has shown a significant improvement.
 - a significant increase/decrease/reduction/loss
 - a significant amount/number/part/portion
 - significant change/progress
 - The results of the experiment are not statistically significant.
 - These views are held by a significant proportion of the population.
 - The 1992 reform made very significant contributions to the development of many rural areas.
 - The drug has had no significant effect on stopping the spread of the disease.
 - Asthma has a significant impact on the life and well-being of children affected by this disease.
 - The offender was assessed as posing a significant risk to others.
 - it is significant that… It is significant that girls generally do better in examinations than boys.
 
Extra Examples- What makes this discovery significant is that it goes against our theory.
 - There was a significant correlation between students' efficacy levels and students' interest levels in the three tasks.
 - The size of the garden was a significant factor in her decision to buy the house.
 - He played a significant role in helping his team to victory.
 
Oxford Collocations Dictionaryverbs- be
 - prove
 - become
 - …
 
- extremely
 - fairly
 - very
 - …
 
- for
 - to
 
 - having a particular meaning
- The fact that her remarks were leaked to the media in advance is highly significant.
 - it is significant that… It is significant that he changed his will only days before his death.
 - This year's event is particularly significant as it takes place on the centenary of his birth.
 - significant to/for somebody rituals which are deeply significant to Christians
 - November 16th will always be an especially significant day for us, thanks to the birth of our second grandchild.
 
 - [usually before noun] having a special or secret meaning that is not understood by everyone synonym meaningful
- a significant look/smile
 
 
Word Originlate 16th cent. (in sense (2)): from Latin significant- ‘indicating’, from the verb significare ‘indicate, portend’, from signum ‘token’.