Keystone

A central element whose support allows a larger whole to remain strong.

Reach for it when showing that one part holds a system or strategy together

Reliable local reporting became the keystone of the emergency plan.

• playful

  backbone

  dependable support deserves forceful praise

  not when Backbone can shift attention toward courage rather than structure.

• everyday

  foundation

  everything else is built upon this base

  not when A foundation need not be the coordinating center.

• warm

  anchor

  the person or practice gives steadiness

  not when An anchor prevents drift but may not connect the other parts.

• professional

  linchpin

  removal would disrupt the whole operation

  not when Linchpin sounds mechanical when praising a person.

• formal

  cornerstone

  the element provides a founding basis

  not when Cornerstone emphasizes beginnings; a keystone holds an existing structure together.

• literary

  pillar

  visible strength supports a community

  not when Several pillars can share the load, unlike a uniquely fitted keystone.

• weak link
• ornament
• afterthought

• keystone species

  The beaver is a keystone species in many wetland ecosystems.

• keystone habit

  A daily planning ritual became the keystone habit behind her calmer weeks.

• keystone of the plan

  Shared radio access is the keystone of the plan for remote villages.