(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Compare Proto-Slavic *-ьmo / *-ьmъ?

• IPA^(key): [ɪ.mɐs̪]

-imas m (plural -imai)

1. Forms a noun from (the past tense form of) a verb

   ‎laukti (“to wait”) + ‎-imas → ‎laukimas (“wait”)

   ‎tarti (“to pronounce; to articulate”) + ‎-imas → ‎tarimas (“pronunciation; articulation”)

   ‎užtemti + ‎-imas → ‎užtemimas (“eclipse”)

   ‎šlapintis (“to urinate”) + ‎-imas → ‎šlapimas (“urine”)

2. Forms a noun from an adjective

   ‎jaunas (“young”) + ‎-imas → ‎jaunimas (“young people”)

• -ymas