heyyyo !

factitious: artificial
the backup story of the criminal was factitious 
Do not be confused by the 'fact' in the word to mean it to be real,

bridle: restrain
The vegan diet bridled his choice of restaurants

quip: witty remark
Quips usually are fun ice breakers

besmirch: dishonor
 the use of foul words besmirched the royal prince's reputation as well as the family name