to hide or suppress your emotions
感情を隠したり抑えたりする (kanjo o kakushitari osaetari suru)
"Don't bottle up your feelings; talk about them."
"感情を押し殺さないで、話し合いましょう。" (kanjo o oshikorosanai de hanashiaimasho)
very intelligent or quick-thinking
to try very hard to help or please someone
to succeed at something easily
to support your words with actions or financial commitment
someone who learns things fast
to decide not to do something because of fear