predominantly

1. In a predominant manner. Most commonly or frequently by a large margin.

   The membership is predominantly elderly, 90% are over age 60.

   • 1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, New York, N.Y.: Columbia University Press, →ISBN, page 3:

     Both groups are predominantly confined to areas with warm to tropical climates{{...}

• primarily, principally; see also Thesaurus:mostly or Thesaurus:usually

• French: principalement, majoritairement, essentiellement
• German: vorwiegend, überwiegend
• Russian: преиму́щественно
• Spanish: principalmente