Act it cleverly without a word (5)
I believe the answer is:
tacit
'without a word' is the definition.
I can't judge whether this defines the answer.
'act it cleverly' is the wordplay.
'cleverly' is an anagram indicator (a clever or tricky version of the letters).
'act'+'it'='actit'
'actit' with letters rearranged gives 'TACIT'.
Can you help me to learn more?
(Other definitions for tacit that I've seen before include "Implied without being said" , "Respect, admiration" , "without speaking" , "Unvoiced" , "Wordless" .)