TEMPO.CO, Jakarta - A defiant President Dilma Rousseff shot back at her detractors on Friday, saying she will not be cowered by the jeers and insults she endured at the World Cup's opening match.

Visibly angered by the rude welcome, the Brazilian leader said the "verbal aggression" was nothing compared with the physical abuse she withstood four decades ago when she was tortured at the hands of the military dictatorship that ruled Brazil at the time.

Many of the 62,100 soccer fans packed into the Corinthians arena in Sao Paulo to watch Brazil play Croatia on Thursday booed loudly and chanted profanities at Rousseff, whose popularity is falling four months ahead of a re-election bid.

"Insults will not intimidate me. I will not be cowered," Rousseff said in a speech to inaugurate the opening of a rapid transit bus system in Brasilia.

"This will not weaken me," Rousseff said, as supporters of her Workers' Party chanted calls for a second term for the leftist leader.

Recent polls show Rousseff losing her comfortable lead ahead of the Oct. 5 election among voters concerned with the weakening of the Brazilian economy and the rising cost of living under her administration.

Many Brazilians are angry about the high cost of the stadiums built to host the World Cup. They say the $11 billion Brazil is spending on the sporting event should have gone to improve deficient health, education and public transport.

Rousseff was also booed last June at the opening game of the Confederations Cup, a warm-up tournament for the World Cup.

RINDU P HESTYA | REUTERS