What is a sentence using fell as an adjective?

The adjective form for the verb to fell is fellable. Example sentence:

Your opponent is fellable, you just have to show him that he is.

The present participle of a verb, felling, and the past participle of a verb, felled, are also used as adjectives. Examples:

The felling operation will begin the first of next month.

The felled timber is trimmed and loaded on flatbed trucks.