regreatful 意思

貌似你多写了个a。
regretful [ri'gretful]
adj.
后[懊]悔的, 遗憾的, 抱歉的

怀念的; 依恋的

be regretful for...
懊悔...

regretful [ri grétfəl] adjective
: feeling or showing regret for something

regrettable和regretful辨析：

Regrettable is used of something that is a cause for regret, whereas regretful describes somebody who has feelings of regret for something: These mistakes are regrettable.They felt regretful at missing the opportunity.

regretful
感到抱歉、遗憾。