1. 熟练：conversance 熟悉 | conversancy 熟练 | conversant 亲近的

2. 熟悉/精通/亲近：conversance /熟悉/精通/ | conversancy /熟悉/精通/亲近/ | conversant /熟悉的/亲近的/有交情的/谙练/

3. 熟练, 精通：conversance || 熟悉, 精通 | conversancy || 熟练, 精通 | conversant || 亲近的, 有交情的, 熟悉的

noun

1. personal knowledge or information about someone or something

    Synonym: acquaintancefamiliarityconversance