Declension table of ?yathārthaka

Neuter	Singular	Dual	Plural
Nominative	yathārthakam	yathārthake	yathārthakāni
Vocative	yathārthaka	yathārthake	yathārthakāni
Accusative	yathārthakam	yathārthake	yathārthakāni
Instrumental	yathārthakena	yathārthakābhyām	yathārthakaiḥ
Dative	yathārthakāya	yathārthakābhyām	yathārthakebhyaḥ
Ablative	yathārthakāt	yathārthakābhyām	yathārthakebhyaḥ
Genitive	yathārthakasya	yathārthakayoḥ	yathārthakānām
Locative	yathārthake	yathārthakayoḥ	yathārthakeṣu

Compound yathārthaka -

Adverb -yathārthakam -yathārthakāt