Tablets get intelligent (4)
I believe the answer is:
able
'intelligent' is the definition.
(thesaurus)
'tablets get' is the wordplay.
'get' indicates the answer is hidden within the clue (I've seen 'got' mean this).
'ABLE' is hidden in the letters of 'tablets'.
(Other definitions for able that I've seen before include "Capable seaman" , "Bright" , "Having the ability to do something" , "Competent and equipped" , "Having the power, skill or means (to do something)" .)