complain verb
ADV. bitterly She complained bitterly about the lack of help she received. | loudly | constantly, repeatedly
VERB + COMPLAIN can't/couldn't, can/could hardly It was entirely my own idea, so I can hardly complain. | have cause to, have reason to, have a right to He really has no right to complain. | begin to, start to
PREP. about All the guests complained about the noise. | at She complained at the unfairness of it all. | to I'm going to complain to the council about this!
You can also check other dicts: complain (English, 中文解释 ), wordnet sense, Collins Definition