guard : sentinel
FAVORABL: PROPITIOUS:
guard : sentinel
Reproach : praise completes the analogy.
I can do
Help
Urge
Drawback
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.
entreaty : plea
toughen : strengthen
Snarl grow
Criminal police officer