Meaning of 後先考 in Japanese

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Definition of 後先考

あとさき(atosaki) 【後先】

(n) front and rear; before and after; both ends; beginning and end; order; consequences; context
後先をよく考えて物を言え。
Weigh your words well.

こう(kou) 【考】

あとさきかんがえず(atosakikangaezu) 【後先考えず】

(exp, adv) without thinking of the consequences
後先考えず、とりあえずやってみるか。後は野となれ山となれ、だよ。
Let's just try it. Who cares what happens afterward? There's no sense thinking too much about that.