Here's what rhymes with determined.

Consider these alternatives

able / table be / he whether / together determination / information should / would therefore / wherefore unable / table yet / said if / is so / though they / say impossible / possible identify / high ensure / full prove / use possible / impossible how / thou decide / side could / good find / kind would / could necessary / very we / be will / still to / do enough / does however / never believe / leave likely / unlikely unclear / will clear / will can / an decided / presided