Crossword Genius

Soon perspire regularly in full-body garment (6)

Ross

I believe the answer is:

onesie

'full-body garment' is the definition.
(type of one-piece garment)

'soon perspire regularly' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'soon'+'perspire'='soonperspire'
The alternating letters of 'soonperspire' are 'ONESIE'.

'in' acts as a link.

(Other definitions for onesie that I've seen before include "One-piece full-body garment" , "Single-piece full body garment" .)

I've seen this clue in The Times.
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