ใจเด็ดขาด(jai dèt-kàat)

Meanings

1AdjectiveB2

decisive; resolute; firm

Having or showing a strong will and the ability to make firm decisions without hesitation; resolute.

Examples

เธอterเธอter1you (informal; familiar)2term of address (affectionate)3she; herเป็นbpenเป็นbpen1to be (identity/category/state)2to become3[to] know how; be able to (skill)4[to] be + set expressionsคนkonคนkon1person; human2people (as a group)3person; human being (as prefix-like element)4classifier: peopleใจเด็ดขาดjai dèt-kàatใจเด็ดขาดjai dèt-kàatdecisive; resolute; firmถ้าtâaถ้าtâa1if; in case2if only; provided that (conditional emphasis)ตัดสินใจdtàt-sĭn-jaiตัดสินใจdtàt-sĭn-jai[to] decideจะจะ1will; shall (future/intention marker)2about to; going to (near future, often w/ กำลังจะ)3then; would (result in conditionals)ทำอะไรtam à-raiทำอะไรtam à-raiwhat are you doing?แล้วláeoแล้วláeo1already; now (as of this point)2then; and then; after that3already (preverbal perfective)4and; and then (linking clauses)5already (sentence-final)ก็gâwก็gâw1also; too2then; so (sequence/result)3even; after all (emphasis/justification)4conditional marker (if… then…)5topic/resumption markerจะจะ1will; shall (future/intention marker)2about to; going to (near future, often w/ กำลังจะ)3then; would (result in conditionals)ไม่mâiไม่mâi1not (negator)2no (reply)เปลี่ยนใจbplìian jaiเปลี่ยนใจbplìian jai1[to] change one’s mind2[to] have a change of heart; relentง่ายๆngâai ngâaiง่ายๆngâai ngâai1easy; simple; uncomplicated2plain; low-key; informal3simply; casually; without much effort4easygoing; not fussy (of a person)
She is a resolute person; once she has decided to do something, she won't change her mind easily.