Buffer

v.resilient, calmprofessional

What it means

To reduce the force of harm, pressure, change, or conflict reaching someone or something.

Reach for it when describing protection that absorbs impact without removing every risk

The reserve fund can buffer families against a sudden rise in heating costs.

playful
take the edge off
modest relief suits informal speech
not when the protection is structural and long-term
everyday
protect
keeping something safe is the broad goal
not when partial absorption rather than complete prevention is accurate
everyday
soften
severity is reduced without being eliminated
not when a protective layer or reserve should be named
warm
cushion
softening a blow or financial shock is the image
not when technical moderation of change is being described
professional
insulate
separation from outside change preserves stability
not when active shock absorption rather than isolation is meant
formal
mediate
an intermediary reduces direct conflict
not when financial or physical pressure is the subject
formal
shield
blocking exposure to harm is intended
not when some impact still passes through the protection

buffer against
Tree cover can buffer against the worst afternoon heat.
help buffer
Flexible deadlines help buffer carers from unpredictable disruptions.
buffer the impact
Savings buffer the impact of seasonal changes in income.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.