A growing majority of Americans no longer believe President Donald Trump can keep his promises, a new poll by Gallup revealed. The survey detailed the public's increasing disillusion with the president's performance, with the public less likely to view him as a "strong and decisive leader" or as "honest and trustworthy".

The poll, which was conducted on 5-9 April, show that 45% of Americans believe Trump "keeps his promises". The results mark a 17-point decline from February, when 62% of Americans trusted the president to keep his promises.

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A slim majority of Americans view Trump as a "strong and decisive leader" at 52%, a seven point decline from February's 59%. Less than 50% of the public think the president "can bring about changes this country needs" (46%), "cares about the needs of people like you" (42%), or "can manage the government effectively" (41%).

Most Americans do not think Trump is "honest and trustworthy," the poll found. Only 36% of respondents believe the president is honest and trustworthy, down from 42% in February.

According to Gallup, Trump's approval rating dropped two percentage points from when the February poll was conducted to when the April poll was done, from 42% down to 40%. Trump's favourability rating dropped a mere one percentage point between the two polls, from 46% to 45%.

Trump's supporters have expressed their unhappiness that the president has not moved forward on immigration, healthcare or taxes.

The poll did not directly refer to Trump's airstrike on Syria in response to a chemical attack on civilians that killed more than 100 people. The president faced backlash from his supporters after the airstrike earlier in April – around the time the Gallup poll was conducted.

A Washington Post-ABC News poll showed that a slim majority of Americans were found to support his decision to strike against Syrian President Bashar al-Assad's regime.

Meanwhile, his opponents argue he has not protected middle- and working-class Americans.

Gallup noted that the biggest shifts in perception occurred among groups that are less supportive of Trump, including Democrats, liberals, young adults and women. Among those who do not approve of Trump, only 11% say he keeps his promises — down from 35% in February. The greatest drop was among women, from 65% in February to 40% in April.

However, Trump saw a drop across the board in people who believe he keeps his promises. Men, Republicans, older adults and conservatives all saw between 8% and 12% drop in confidence.

Most Americans have viewed Trump unfavourably since before his inauguration and continue to do so nearly 90 days into his term in office. A majority of the public initially gave Trump credit for appearing to keep his promises early in his presidency, but that too has declined, Gallup noted.