Focus on how 'mainstay' implies that something is consistently reliable and necessary for support. The goalkeeper is the mainstay of our football team.
Pro Tip 2/3
Core Component
'Mainstay' often refers to a key component that holds everything else together, emphasizing its central importance. Trust is the mainstay of any strong relationship.
Pro Tip 3/3
Emotional Connotation
'Mainstay' can evoke a sense of gratitude or appreciation for whatever is providing support. My grandmother has been the mainstay of our family through difficult times.