Methods and arrangements for providing interactive query suggestions. A partial user query phrase is received, the partial query phrase comprising a final word element. A vocabulary is accessed and, from the vocabulary, at least one possible completion of the final word element is ascertained. A phrase index is accessed and, from the phrase index, at least two phrases corresponding to completions of the partial user query phrase with the at least one possible completion of the final word element are ascertained. A probability score is assigned to each of the at least two phrases, and the at least two phrases are ranked based on probability.