कठिन sound of pronunciation

कठिन in English：strait; scleroid; sclerus; fugacious; abstruse; trick; tight; tense; sticky; rough; nice; hairy; dodgy; complicated; torrid; mazy; weighty; toilful; involved; toilsome; difficile; captious; problem; spiny; thorny; rigorous; man-sized; tough; violent; laborious; knotty; intricate; heavy; hard; difficult; crucial; callous; Byzantine; austere; arduous; long; painful; parlous; uphill; untoward; tenacious; tedious; tart; subtle; strict; stiff; severe; rigid; recondite; heavy going; harden