In the present system some forms in -īre are used by late writers.
| sinō, leave, let | sinere | sīvī | situs |
Perfect system forms of sinō and dē-sinō in -v- are: sīvī (Plaut., Ter., Cic.); dē-sīvit (Sen.), sīvistis (Cic.), once each; sīverīs (Plaut., Cato), dē-sīverit (Cato, Gell.), sīverint (Plaut., Curt.), sīvisset (Cic., Liv.). Much oftener without -v-: as, dē-siī (Sen.), sīstī (Plaut., Cic.); dē-sīstī often, siit once (Ter.), dē-siit (Varr., Sen., &c.), dē-sīt (Mart., &c.), dē-siimus (Lent.), dē-sīmus ([893]), sīstis; dē-siērunt (Cic., Liv.); dē-sierat, dē-sierit (Cic.); dē-sīssem, &c., sīsset, sīssent, dē-sīsse. For sīrīs, &c., see [893]; for pōnō, [972].
| spernō, spurn | spernere | sprēvī | sprētus |
| sternō, strew | sternere | strāvī | strātus |
[965.] (c.) With the present stem in -sco|e- ([834]).
| crēscō, grow | crēscere | crēvī | crētus |
| nōscō, get to know | nōscere | nōvī | nōtus adjective |
Compounds: ī-gnōscō, ī-gnōvī, ī-gnōtum; ā-gnōscō, ā-gnōvī, ā-gnitus; cō-gnōscō, cō-gnōvī, cō-gnitus; dī-nōscō, dī-nōvī, rarely dī-gnōscō, dī-gnōvī, ——; inter-nōscō, inter-nōvī, ——. Old passive infinitive GNOSCIER (inscr. 186 B.C.).
| pāscō, feed | pāscere | pāvī | pāstus |
| scīscō, enact | scīscere | scīvī | scītus |
[966.] (2 b.) The following verbs in -ere have the perfect stem in -v-, preceded by the long vowel of a presumed denominative stem ([870]), and the perfect participle, when used, in -tus: