(Ireland, historical) The continued violence and terrorist, military and paramilitary activity in Northern Ireland that happened from the mid 1960s to the late 1990s.

A distressing or dangerous situation. / A difficulty, problem, condition, or action contributing to such a situation. / A violent occurrence or event.

(transitive, now rare) To disturb, stir up, agitate (a medium, especially water). / (transitive) To mentally distress; to cause (someone) to be anxious or perplexed.

anxious, worried, careworn.

simple past tense and past participle of trouble

plural of trouble

Third-person singular simple present indicative form of trouble

Suffering difficulties. / (chiefly of a child) Liable to be punished for misbehavior; in disgrace. / (euphemistic) Pregnant, unmarried, and not likely to be married before giving birth.

distressing, worrying

present participle of trouble