相关单词同义词useful, beneficial, advantageous, conducive, assistant, 近义词 considerate, friendly, timely, kind, useful反义词futile, useless, worthless临近词helpless, helper, helpfully, helpful in, helpful to, helpfulness, helpful tips, helpful hint, helpful order, helpful notes, helpful effect, helpful insect相似词help (sb) out, help desk, help screen, helper, helping, helping verb, helpless, helpline, 返回 helpful