Learn how to say Sticklers correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word stickler:
a person who insists on a certain quality or type of behaviour:
he’s a stickler for accuracy
I’m a stickler when it comes to timekeeping
mid 16th century (in the sense ‘umpire’): from obsolete stickle ‘be umpire’, alteration of obsolete stightle ‘to control’, frequentative of Old English stiht(i)an ‘set in order’