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knotty

adjective

/ˈnɒti/

Meaning

Complicated, difficult to solve or full of knots.

He faced a knotty legal issue.

complicated, tricky, complex, difficult, challenging

simple, easy, straightforward

knotty problem, knotty issue, knotty question, knotty matter

Excessively concerned with formal rules or outward show of morality, often in a hypocritical way.

Beginning to grow or increase rapidly; flourishing.

unable to defend oneself or act without help; powerless; vulnerable

Based on or using algorithms; relating to computational procedures and systematic methods.

impervious to sound; preventing sound from entering or leaving

extremely poor and lacking the means to provide for oneself