Posture adjectives are listed in this post. Each word below can often be found in front of the noun posture in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing POSTURE.
abject, abnormal, adversarial, aggressive, alert, appropriate, awkward, bad, bending, bent, best, better, body, casual, certain, characteristic, comfortable, common, confident
confrontational, constrained, correct, critical, crouching, defensive, defiant, devout, different, dignified, drooping, easy, erect, exact, fixed, flexed, former, general, good
graceful, great, horizontal, humble, humiliating, hunched, ideological, ill, leaning, like, lotus, lowly, meditative, melancholy, menacing, mental, military, musing, natural
neutral, new, normal, nuclear, offensive, open, other, own, painful, particular, pensive, perfect, physical, political, poor, present, procedural, proper, protective
public, reactive, reclining, recumbent, relaxed, respectful, right, rigid, same, seated, similar, squatting, standing, stiff, stooped, straight, strange, strategic, submissive
such, supine, suppliant, supplicating, tense, thoughtful, threatening, true, uncomfortable, uneasy, unnatural, unusual, upright, usual, very, warlike, whole
Hope this word list had the adjective used with posture you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.