To tease is a bit out of order (4)
I believe the answer is:
bait
'to tease' is the definition.
('bait' can be a synonym of 'tease')
'a bit out of order' is the wordplay.
'out of order' indicates anagramming the letters.
'a'+'bit'='abit'
'abit' anagrammed gives 'BAIT'.
'is' is the link.
(Other definitions for bait that I've seen before include "Food to lure fish" , "Food to entice fish; taunt" , "Boilie, for example" , "Enticement, lure" , "Enticement for fish" .)