present participle of anstrengen
çekim: karşılaştırma anstrengender · üstünlük am anstrengendsten
eş: ermüdend, strapaziös, mühsam
laborious, toilsome, demanding · industrious, hard-working
çekim: üstünlük labōriōsissimus
köken: From labor (“work, exertion”) + -ōsus. However, the inserted -i- is enigmatic. It may be a result of analogy: cūra : cūriōsus = labor : ?
aile: labōriōsē
heavy, weighty, ponderous, elephantine · hard, difficult, arduous, burdensome, cumbersome, cumbrous, onerous, severe, tough, gruelling, painful, effortful, trying · serious, grave, important, grievous
çekim: karşılaştırma по́-те́жки · üstünlük на́й-те́жки
köken: Inherited from Old Church Slavonic тѧжькъ (tęžĭkŭ), from Proto-Slavic *tęžьkъ.