"Knee" isn't a French word, it's an English word.
It's often possible to translate a given word in several ways. The only one I know of for "knee" is "le genou" which is masculine, but it's entirely possible that there's some alternate word that also means "knee" but is feminine.
it is dynamique (masc. and fem. singular) dymamiques (masc. and fem plural)
The French word is champion (masc.), championne (fem.).
prêt (masc.), prête (fem.)
dur (masc.) dure (fem.)
violent (masc.), violente (fem.)
Laid (masc.) or laide (fem.).
The word "table" is feminine in French.
Blue = bleu (masc.) bleue (fem.) White = blanc (masc.) blanche (fem.) Red = rouge (masc. and fem.)
Intelligent (masc.), intelligente (fem.)
Feminine in French is: féminin (masc.), féminine (fem.) "mot" est un mot (masc.) féminin (masc.)
ton ami (masc.), ton amie (fem.) tes amis (masc. plural), tes amies (fem. plural)
Best is meilleur (masc.) or meilleure (fem.) in French.