na-adjective
high-handed; coercive; overbearing
Describes an attitude or action that forces compliance through authority or pressure, often with a negative connotation.
彼の強圧的な態度に、みんな反発した。
Everyone pushed back against his high-handed attitude.
Trying to make people obey through coercive measures won't last long.
強制的 means compulsory or forced, often used in legal or institutional contexts, while 強圧的 has a more personal, oppressive nuance.
Compound of 強圧 (coercion, strong pressure) + 的 (-like, -ish). The exact historical derivation is uncertain, but the word follows a common pattern for forming adjectival nouns from Sino-Japanese compounds.