From Wiktionary, the free dictionary
tesmoing + -er
tesmoignier
to witness ; to bare witness
c. 1175 , Chrétien de Troyes , Lancelot ou le Chevalier de la charrette , line 9:jel tesmoignasse I witnessed it
This verb conjugates as a first-group verb ending in -ier , with a palatal stem. These verbs are conjugated mostly like verbs in -er , but there is an extra i before the e of some endings. The forms that would normally end in *-ign , *-igns , *-ignt are modified to ing , inz , int . Old French conjugation varies significantly by date and by region. The following conjugation should be treated as a guide.
tesmoignier
avoir tesmoignié
en tesmoignant
gerund of avoir + past participle
tesmoignant
tesmoignié
indicative
jo
tu
il
nos
vos
il
simple tenses
present
tesmoing
tesmoignes
tesmoigne
tesmoignons
tesmoigniez
tesmoignent
imperfect
tesmoignoie , tesmoigneie , tesmoignoe , tesmoignieve
tesmoignoies , tesmoigneies , tesmoignoes , tesmoignieves
tesmoignoit , tesmoigneit , tesmoignot , tesmoignieve
tesmoigniiens , tesmoigniens
tesmoigniiez , tesmoigniez
tesmoignoient , tesmoigneient , tesmoignoent , tesmoignievent
preterite
tesmoignai
tesmoignas
tesmoigna
tesmoignames
tesmoignastes
tesmoignierent
future
tesmoignerai
tesmoigneras
tesmoignera
tesmoignerons
tesmoigneroiz , tesmoignereiz , tesmoignerez
tesmoigneront
conditional
tesmoigneroie , tesmoignereie
tesmoigneroies , tesmoignereies
tesmoigneroit , tesmoignereit
tesmoigneriiens , tesmoigneriens
tesmoigneriiez , tesmoigneriez
tesmoigneroient , tesmoignereient
compound tenses
present perfect
present tense of avoir + past participle
pluperfect
imperfect tense of avoir + past participle
past anterior
preterite tense of avoir + past participle
future perfect
future tense of avoir + past participle
conditional perfect
conditional tense of avoir + past participle
subjunctive
que jo
que tu
qu’il
que nos
que vos
qu’il
simple tenses
present
tesmoing
tesmoinz
tesmoint
tesmoignons
tesmoigniez
tesmoignent
imperfect
tesmoignasse
tesmoignasses
tesmoignast
tesmoignissons , tesmoignissiens
tesmoignissoiz , tesmoignissez , tesmoignissiez
tesmoignassent
compound tenses
past
present subjunctive of avoir + past participle
pluperfect
imperfect subjunctive of avoir + past participle
imperative
–
tu
–
nos
vos
–
—
tesmoigne
—
tesmoignons
tesmoigniez
—