brutal

adjective
  1. Extremely cruel, harsh, or severe; showing no compassion or mercy. adjective
    The dictator's regime was known for its brutal suppression of dissent.
    The brutal winter storm left many without power for days.
  2. Direct and without attempting to disguise unpleasantness; blunt or straightforward. adjective
    She gave him a brutal assessment of his performance, sparing no feelings.
    The feedback was brutal, but it helped him improve significantly.
  3. Physically demanding or exhausting; harsh in terms of effort or endurance required. adjective
    The marathon was a brutal test of endurance for all the participants.
    The hike through the mountains was brutal, but the view from the top was worth it.