Declension table of ?gūrdhayitavya

Neuter	Singular	Dual	Plural
Nominative	gūrdhayitavyam	gūrdhayitavye	gūrdhayitavyāni
Vocative	gūrdhayitavya	gūrdhayitavye	gūrdhayitavyāni
Accusative	gūrdhayitavyam	gūrdhayitavye	gūrdhayitavyāni
Instrumental	gūrdhayitavyena	gūrdhayitavyābhyām	gūrdhayitavyaiḥ
Dative	gūrdhayitavyāya	gūrdhayitavyābhyām	gūrdhayitavyebhyaḥ
Ablative	gūrdhayitavyāt	gūrdhayitavyābhyām	gūrdhayitavyebhyaḥ
Genitive	gūrdhayitavyasya	gūrdhayitavyayoḥ	gūrdhayitavyānām
Locative	gūrdhayitavye	gūrdhayitavyayoḥ	gūrdhayitavyeṣu

Compound gūrdhayitavya -

Adverb -gūrdhayitavyam -gūrdhayitavyāt