意見, いけん
1. opinion, view, comment
Takes suru, Transitive, Intransitive
2. scolding, reprimand, rebuke, admonition, cautioning, warning
ここではどんどん意見をおっしゃってかまいません。
に
Particle
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), with
5. by, from