Harmful (3)
'harmful' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for ill that I've seen before include "Ailing" , "reduced state" , "Unwell, sick" , "Wicked" , "Infirm" .)
'harmful' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for bad that I've seen before include "Evil, below standard or off" , "Rotten, evil" , "Harmful" , "Severe; of low standard" , "SECOND HALF OF 16" .)
'harmful' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for deleterious that I've seen before include "Bad" , "True oilseed (anag) -- harmful" , "Elude Tories (anag.)" , "Causing harm or damage" .)
(Other definitions for detrimental that I've seen before include "Harmful; admit, relent (anag.)" , "Damaging" , "Causing harm" , "which is bad for one" , "Tending to cause harm" .)
'harmful' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for malignant that I've seen before include "Seeking to harm others" , "Feeling or showing great ill will, cancerous" , "Very bad" , "Evil, malevolent" , "Not benign" .)
'harmful' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for injurious that I've seen before include "insulting" , "Wrongful" , "Harmful" , "Hurtful" , "Damaging (to reputation, say)" .)
'harmful' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for damaging that I've seen before include "injurious" , "Causing harm or injury" , "Hurting" .)
'harmful' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for adverse that I've seen before include "Hostile" , "'Unfavourable, contrary (7)'" , "Unfavourable or harmful, perhaps criticism" , "Inopportune" , "Detrimental" .)
'harmful' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for noxious that I've seen before include "Harmful, toxic" , "Disgusting" , "bad for you" , "foul" , "Unpleasant and harmful" .)
'harmful' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for baleful that I've seen before include "Of evil influence" , "Malevolent" , "Malignant" , "Menacing - dejected" , "Menacing - vindictive" .)