Laceration - a cut
Since he didn't cared about laceration he has got infection

Obdurate - stubborn
Obdurate people are very difficult to handle

Plausible - can be believed; reasonable
Only Rajesh was able to give a plausible solution of the labyrinth

Reprieve - a respite; postponement of a sentence
In today's competitive world one cannot take a reprieve from work

Tawdry - of little value; gaudy
Misers take care of even tawdry things