Impugnable and Iffy

Impugnable adjective - Subject to being discredited.

Iffy and impugnable are semantically related. in questionable topic. In some cases you can use "Iffy" instead an adjective "Impugnable", when it comes to topics like doubtful, tricky.

Iffy adjective - Subject to accident or chance or change.

Impugnable and iffy are semantically related. Sometimes you can use "Impugnable" instead an adjective "Iffy".