-учий

• -ю́чий (-júčij)

Inherited from Late Proto-Slavic *-ǫťь, a present active participial suffix. Doublet of -у́щий (-úščij), the normal present participle suffix, a borrowing from Old Church Slavonic.

• IPA^(key): [ˈut͡ɕɪj]

-у́чий • (-účij)

1. Adjective-forming suffix, added to intransitive verbs, indicating being in the state of that verb.

   ‎лета́ть (letátʹ, “to fly”) + ‎-у́чий (-účij) → ‎лету́чий (letúčij, “flying”)

   ‎пла́вать (plávatʹ, “to float”) + ‎-у́чий (-účij) → ‎плаву́чий (plavúčij, “floating, buoyant”)

   ‎па́хнуть (páxnutʹ, “to smell of”) + ‎-у́чий (-účij) → ‎паху́чий (paxúčij, “fragrant”)

   ‎ползти́ (polztí, “to crawl”) + ‎-у́чий (-účij) → ‎ползу́чий (polzúčij, “crawling, creeping”)

   ‎жечь (žečʹ, “to burn”) (present tense жгу (žgu)) + ‎-у́чий (-účij) → ‎жгу́чий (žgúčij, “burning”)

   ‎жить (žitʹ, “to live”) (present tense живу́ (živú)) + ‎-у́чий (-účij) → ‎живу́чий (živúčij, “viable, enduring”)

Note the following properties:

• The suffix is always stressed.
• The suffix is normally added to the infinitive of the verb, minus any ending such as -ать (-atʹ), -нуть (-nutʹ), or -ти (-ti). If the infinitival and present stems differ, the present stem is used.

• -я́чий (-jáčij)