What's the adjective for excretory? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs excrete and excrementize which may be used as adjectives within certain contexts.
“If this fluid is a secretion, it must be either excrementitious or recrementitious, and subject to the laws by which these two divisions are governed.”
“The film's set, exhibited here as a sculptural installation, is surrounded by walls painted with excremental smears of brown.”
“As time went by, these excremental rags slowly became stratified layers, like the guano that comes from the isles of Latin America.”
“Risking olfactory-nerve damage at the 15th, we breathed deeply because there moved on the air that certain smell born of mighty excremental deposits.”