拘谨 | jū jǐn | reserved / overcautious | |
瞻前顾后 | zhān qián gù hòu | to look forward and back / to consider prudently / overcautious | |
迂讷 | yū nè | overcautious / conservative and dull in conversation | |
四平八稳 | sì píng bā wěn | everything steady and stable (idiom) / overcautious and unimaginary |