anstrengendsten
Anstrengendsten is the superlative form of the German adjective anstrengend, meaning strenuous or exhausting. It describes something that is the most difficult, taxing, or demanding among a group of comparable things. For example, one might say "Die gestrige Wanderung war die anstrengendsten" meaning "Yesterday's hike was the most strenuous." This implies that the hike required more physical or mental effort than any other hike the speaker has experienced. The word can be applied to physical activities like sports or labor, as well as mental tasks or situations that cause significant stress or fatigue. The context in which anstrengendsten is used will determine the specific nature of the exertion being described. It signifies the peak of demanding effort or challenge.