Crossword Genius

Eels try wriggling briefly (7)

Ross

I believe the answer is:

tersely

'briefly' is the definition.
(thesaurus)

'eels try wriggling' is the wordplay.
'wriggling' is an anagram indicator (letters wriggle or move about).
'eels'+'try'='eelstry'
'eelstry' anagrammed gives 'TERSELY'.

(Other definitions for tersely that I've seen before include "using few words" , "In a short and concise manner" , "Abruptly" , "In an abrupt manner" , "In a short or curt manner" .)

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