Osment rhymes with:
advancement, announcement, announcment, assessment, basement, bemusement, commencement, debasement, disbursement, displacement, embarrassment, emplacement, endorsement, enforcement, engrossment, enhancement, enticement, financement, harassment, impressment, inducement, outplacement, placement, pronouncement, reassessment, reimbursement, reinforcement, replacement, retracement
Osment sounds like:
oakmont, occasioned, okamoto, okimoto, oquendo, osmond, osmund, oxygenate, oxygenated, ozment, ozmet