comtemporary

As a noun predecessor is

one who precedes; one who has preceded another in any state, position, office, etc; one whom another follows or comes after, in any office or position.

As an adjective modern is

pertaining to a current or recent time and style; not ancient.

As a noun modern is

someone who lives in modern times.

Comtemporary is likely misspelled.

Comtemporary has no English definition.

As a noun tentative

is a trial; an experiment.

As an adjective tentative

is of or pertaining to a trial or trials; essaying; experimental.