~kya ～きゃ

In Japanese, ~kya ～きゃ is a contraction of ~kereba ～ければ, the conditional ba-form of i-adjectives. Or some sort of fangirling shriek: kyaa! きゃー！

Some examples of how it's used:

• takakya kaenai
  高きゃ買えない
  [I] can't buy [it] if [it's] expensive.
  • takakereba kaenai
    高ければ買えない
    (same meaning.)
• yowakya dame
  弱きゃダメ
  [It's] no good if [it's] weak.
  • yowakereba dame
    弱ければダメ
    (same meaning.)
• kawaikya ii-n-da可愛きゃいいんだ
  If [it's] cute [it's] good.
  [It's] good so long [it's] cute.
• kawaikereba ii-n-da
  可愛ければいんだ
  (same meaning.)

Its meaning is similar to ~kucha ～くちゃ, which comes from ~kute wa ～くては, the te-form　plus the wa は particle.