られる

From Classical Japanese らる (raru), which followed 下二段活用 (shimo nidan katsuyō, “lower bigrade conjugation”) and attached to the 未然形 (mizenkei, “irrealis or incomplete form”) of monograde, bigrade, カ行変格活用 (ka-gyō henkaku katsuyō, “k-irregular conjugation”), and サ行変格活用 (sa-gyō henkaku katsuyō, “s-irregular conjugation”) verbs.

As with other shimo nidan verbs, the original 終止形 (shūshikei, “terminal form”) らる (raru) was gradually lost as the 連体形 (rentaikei, “attributive form”) らるる (raruru) came to be used for both functions, realigning the conjugations, and the conjugation type shifted to 下一段活用 (shimo ichidan katsuyō, “lower monograde conjugation”), making the modern form られる (rareru).

られる (ichidan conjugation, rōmaji -rareru)

1. (jodōshi) Used to form the passive of verbs.
   1. Makes the passive voice.

      昨 (き)日 (のう)先 (せん)生 (せい)に褒 (ほ)められた。

      Kinō sensei ni homerareta.

      I was praised by my teacher yesterday.

   2. Makes the potential form; -able, -ible

      このキノコは食 (た)べられますか。

      Kono kinoko wa taberaremasu ka.

      Is this mushroom edible?

   3. Shows a spontaneous action.
   4. Forms a light honorific expression.

Attaches only to the 未然形 (mizenkei, “irrealis or incomplete form”) of Group II (ichidan) and Group III (irregular) verbs. The result is conjugated like a Group II (ichidan) verb.

• 起 (お)きる (okiru) → 起 (お)きられる (oki-rareru), 起 (お)きられます (oki-raremasu), etc.
• 食 (た)べる (taberu) → 食 (た)べられる (tabe-rareru), 食 (た)べられます (tabe-raremasu), etc.
• 来 (く)る (kuru) → 来 (こ)られる (ko-rareru), 来 (こ)られます (ko-raremasu), etc.
• する (suru) → (archaic) せられる (se-rareru), せられます (se-raremasu), etc.

The passive form of verbs from other conjugation classes are formed with れる (-reru) instead of られる (-rareru).

Recently in colloquial speech, られる (-rareru) used for the potential can be shortened to れる (-reru), e.g. 起 (お)きれる (okireru), 食 (た)べれる (tabereru), 来 (こ)れる (koreru). This practice is called ら抜 (ぬ)き言 (こと)葉 (ば) (ra-nuki kotoba).

• れる (-reru)