PESSIMISTIC
pessimistic
(adjective) expecting the worst possible outcome
Source: WordNet® 3.1
Etymology
Adjective
pessimistic (comparative more pessimistic, superlative most pessimistic)
Marked by pessimism and little hopefulness; expecting the worst.
Pertaining to the worst-case scenario.
(computing) Taking out exclusive locks on data to prevent conflicts with other processes that might modify it.
Antonyms
• optimistic
Source: Wiktionary
Pes"si*mist, Pes`si*mis"tic, a. (Metaph.)
Definition: Of or pertaining to pessimism; characterized by pessimism;
gloomy; foreboding. "Giving utterance to pessimistic doubt." Encyc.
Brit.
Source: Webster’s Unabridged Dictionary 1913 Edition