DictionaryfirmPhysical solidity
adjective / verb / adverb

firm

FURM/fˈɝm/

Stable enough to resist pressure or change.

The wooden post remains firm as an adult pushes against it.

A heavy wooden post stands firmly embedded in compact ground while an adult pushes against it and it remains steady, stability clear, no movement arrows.
Etymology

Latin firmus covered both physical stability and figurative steadfastness. That breadth survives in English: a firm object resists movement, while a firm decision resists change.

In context

Enhanced Public Domain451:13
Be steady to your purposes and firm as a rock this ice is not made of such stuff as your hearts may be it is mutable and cannot withstand you
1800s Fiction Audiobook: Mary Shelley - Frankenstein

More examples

  • She firms the soil around each seedling with her hands.
  • Our departure date is firm, even if the weather changes.
  • They stand firm despite pressure to accept a lower price.

Forms

firm · firmer · firmest · firms · firmed · firming

firmness noun — The quality of resisting pressure or change.

firmly adverb — In a steady or unyielding way.

Similar words

solid
Emphasizes a substantial structure that does not easily yield.
stable
Emphasizes staying balanced or unchanged rather than resisting compression.
steadfast
Describes unwavering purpose or loyalty rather than physical solidity.