Criminal police officer
Urge
toughen : strengthen
Come and go
Assert : Deny what would that analogy be?
Analogy means to compare two things that are similar. For example, an analogy for heart would be a pump. This is because they are similar and do the same thing.
Reproach : praise completes the analogy.
I can do
Help
Urge
Drawback
guard : sentinel
soothe
The answer to the analogy "taboo is to forbidden as cheerful is to" would be happy. Taboo and forbidden are synonymous in meaning, so cheerful and happy would be the appropriate pair in this analogy.
Reproach praise
entreaty : plea
toughen : strengthen
Snarl grow