Declension table of yajñopavīta

Neuter	Singular	Dual	Plural
Nominative	yajñopavītam	yajñopavīte	yajñopavītāni
Vocative	yajñopavīta	yajñopavīte	yajñopavītāni
Accusative	yajñopavītam	yajñopavīte	yajñopavītāni
Instrumental	yajñopavītena	yajñopavītābhyām	yajñopavītaiḥ
Dative	yajñopavītāya	yajñopavītābhyām	yajñopavītebhyaḥ
Ablative	yajñopavītāt	yajñopavītābhyām	yajñopavītebhyaḥ
Genitive	yajñopavītasya	yajñopavītayoḥ	yajñopavītānām
Locative	yajñopavīte	yajñopavītayoḥ	yajñopavīteṣu

Compound yajñopavīta -

Adverb -yajñopavītam -yajñopavītāt