色(いろ)んな

色(いろ)んな is a colloquial contraction of いろいろな (various). Extremely common in spoken Japanese.

Register

• いろいろな: standard/formal (writing, polite speech)
• 色(いろ)んな: casual/colloquial (conversation, informal writing)
• いろんな: same word without kanji (also common)

Common patterns

色(いろ)んな is a pre-noun modifier only. It always precedes a noun and cannot be used as a predicate. Use いろいろだ for the predicative form.

• 色(いろ)んな人(ひと): various people ✓
• 人(ひと)は色(いろ)んなだ: ✗ (use いろいろだ instead)

Common collocations

• 色(いろ)んな人(ひと): various people
• 色(いろ)んな場所(ばしょ): various places
• 色(いろ)んな意味(いみ)で: in various senses
• 色(いろ)んなことがある: all sorts of things happen