"of indeterminate age"
"a zillion is a large indeterminate number"
"an indeterminate point of law"
"the influence of environment is indeterminate"
"an indeterminate future"
"an indeterminate stem"
"the equivocal (or indeterminate) objects painted by surrealists"
"the indeterminate number of plant species in the jungle"
"an indeterminate campaign"