upayah

vadha-upāyaḥ means of disappearance; SB 3.3.15
vadha-upāyāḥ many varieties of means to kill him; SB 7.5.45
upāyaḥ means; SB 8.11.38
upāyaḥ some means; SB 8.17.17
tat-vadha-upāyaḥ the only means of killing Him (Viṣṇu); SB 10.4.42
upāyaḥ means; SB 10.56.40-42
upāyāḥ means; SB 11.2.34
upāyaḥ any means; SB 11.11.48
upāyaḥ means; SB 11.20.6