1

「もう一度かかっといで」。

At the beginning, I thought it was 掛かって + ぐ ending verb turned into its imperative mood; then I've found かかってこい, it would make sense. If so, why does で appear? Is と the contraction for てこ?

0
2

かっかといで is just a contraction of かかっておいで "Come at me!". (The contraction of て+お > と is the same one that occurs in -ておく > -とく.)

As you may know, おいで is a fossilised form of the honorific of くる (おいでになる), used exclusively as an imperative. So essentially, this is just equivalent to かかってこい.

Not the answer you're looking for? Browse other questions tagged or ask your own question.