pivotal
adjective
[ ˈpɪvətl ]
• of crucial importance in relation to the development or success of something else.
• "Japan's pivotal role in the world economy"
Similar:
central,
crucial,
vital,
critical,
focal,
essential,
key,
significant,
important,
determining,
decisive,
deciding,
• fixed on or as if on a pivot.
• "a sliding or pivotal motion"
