Infinitive
| demonstrer |
| avoir demonstré |
Gerund
en demonstrant
Participles
| Present | demonstrant |
| Past | demonstré |
Indicative
Present
| 1st sing. | demonstre |
| 2nd sing. | demonstres |
| 3rd sing. | demonstre |
| 1st plur. | demonstrons |
| 2nd plur. | demonstrez |
| 3rd plur. | demonstrent |
Imperfect
| 1st sing. | demonstroie; demonstreie; demonstroe; demonstreve |
| 2nd sing. | demonstroies; demonstreies; demonstroes; demonstreves |
| 3rd sing. | demonstroit; demonstreit; demonstrot; demonstreve |
| 1st plur. | demonstriiens; demonstriens |
| 2nd plur. | demonstriiez; demonstriez |
| 3rd plur. | demonstroient; demonstreient; demonstroent; demonstrevent |
Preterite
| 1st sing. | demonstrai |
| 2nd sing. | demonstras |
| 3rd sing. | demonstra |
| 1st plur. | demonstrames |
| 2nd plur. | demonstrastes |
| 3rd plur. | demonstrerent |
Future
| 1st sing. | demonstrerai |
| 2nd sing. | demonstreras |
| 3rd sing. | demonstrera |
| 1st plur. | demonstrerons |
| 2nd plur. | demonstreroiz; demonstrereiz; demonstrerez |
| 3rd plur. | demonstreront |
Conditional
| 1st sing. | demonstreroie; demonstrereie |
| 2nd sing. | demonstreroies; demonstrereies |
| 3rd sing. | demonstreroit; demonstrereit |
| 1st plur. | demonstreriiens; demonstreriens |
| 2nd plur. | demonstreriiez; demonstreriez |
| 3rd plur. | demonstreroient; demonstrereient |
Subjunctive
Present
| 1st sing. | demonstre |
| 2nd sing. | demonstres |
| 3rd sing. | demonstre |
| 1st plur. | demonstrons |
| 2nd plur. | demonstrez |
| 3rd plur. | demonstrent |
Imperfect
| 1st sing. | demonstrasse |
| 2nd sing. | demonstrasses |
| 3rd sing. | demonstrast |
| 1st plur. | demonstrissons; demonstrissiens |
| 2nd plur. | demonstrissoiz; demonstrissez; demonstrissiez |
| 3rd plur. | demonstrassent |
Imperative
| 2nd sing. | demonstre |
| 1st plur. | demonstrons |
| 2nd plur. | demonstrez |
Verbs conjugated like demonstrer
secher,
sonjer,
sigler,
chastrer,
estrangler,
peccher,
engendrer,
aanchrer,
blasmer,
dampner,
sercher,
condampner,
adestrer,
sembler,
senbler,
dempner,
desaencrer,
sambler,
sanbler,
chulcher, etc. (List truncated at 20 verbs)
Sample Sentences
Cognates
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