firm

A business partnership; the name under which it trades.

A business enterprise, however organized.

A criminal gang, especially based around football hooliganism.

To make firm or strong; fix securely.

To make compact or resistant to pressure; solidify.

To become firm; stabilise.

To improve after decline.

To shorten (of betting odds).

To select (a higher education institution) as one's preferred choice, so as to enrol automatically if one's grades match the conditional offer.

Steadfast, secure, solid (in position)

“It's good to have a firm grip when shaking hands.”

Fixed (in opinion)

“He was firm that selling his company would a good choice and didn't let anyone talk him out of it.”

Durable, rigid (material state)

“firm flesh; firm muscles, firm wood; firm land (i.e. not soft and marshy)”