adjective
firmer; -est
fairly hard or solid :not soft
set, placed, or attached in a way that is not easily moved
not weak or uncertain
not likely to change or be changed
having or showing true and constant support for something or someone
hold firm
stand firm
verb
firms; firmed; firming
[+ obj] :to put (something, such as a plan) into a final form - usually + up
[+ obj] :to make (something) harder or more solid :to make (something) less loose
[+ obj] :to make (something) stronger
[no obj] :to become less likely to change or become weaker
noun
plural firms
[count] :a business organization
US