Sycophant (5)
(Other definitions for yes man that I've seen before include "An agreeable sycophant?" , "Sycophantic male employee" , "Sheep" , "He always agrees with everything" , "Obsequious male who always agrees with the boss" .)
'sycophant' is the definition.
(I know that sycophant can be written as crawler)
This is the entire clue.
(Other definitions for crawler that I've seen before include "Figure that's greasy" , "Sycophant" , "Minion" , "heavy slow-moving vehicle" , "Internet search program" .)
'sycophant' is the definition.
(I know that sycophant can be written as toady)
This is the entire clue.
(Other definitions for toady that I've seen before include "Curry favour" , "Obsequious type" , "Creep" , "Bootlicker" , "Person who flatters and behaves obsequiously to another" .)
'sycophant' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for flatterer that I've seen before include "Person who imitates, perhaps" , "Sycophant" , "One uses butter" .)