Herb is cold when meeting the girl, nasty almost (7)
I believe the answer is:
chervil
'herb' is the definition.
(I know that chervil is a type of herb)
'meeting the girl nasty almost' is the wordplay.
'meeting' says to put letters next to each other.
'the girl' becomes 'cher' ().
'nasty' becomes 'vile' (synonyms).
'almost' means to remove the last letter (most of the word but not all of it).
'vile' with its last letter taken away is 'vil'.
'cher'+'vil' is 'CHERVIL'.
'is cold when' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for chervil that I've seen before include "Herb of the parsley family" , "Cicely's relation" , "Parsley relative with aromatic leaves" , "Herb, relative of parsley" , "The green stuff" .)