1. keep
2. hold, conserve
3. preserve, keep up, keep, sustain
4. keep, have, have got, hold, assert
5. asseverate, insist, take a firm stand, wield
6. exert, have, have got, hold, keep
7. have, have got, hold, keep
8. record, enter, put down, defend
9. affirm, uphold
10. confirm, reassert, observe
10. keep