1. protest against, oppose, say no to, kick (against) (informal), argue against, draw the line (at something), take exception, raise objections, cry out against, complain against, take up the cudgels against, expostulate against A lot of people objected to the plan.
protest against accept, welcome, approve, like, comply with, consent to, take on board
2. disagree, demur, remonstrate, expostulate, express disapproval We objected strongly.
disagree agree, concur, assent, acquiesce
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002