Acicular and Knifelike

Acicular adjective - Narrow and long and pointed; as pine leaves.

Knifelike and acicular are semantically related. In some cases you can use "Knifelike" instead an adjective "Acicular".

Knifelike adjective - Cutting or able to cut as if with a knife.

Acicular and knifelike are semantically related. Sometimes you can use "Acicular" instead an adjective "Knifelike".