See poise in Webster's New World Roget's A-Z Thesaurus II
noun
A stable, calm state of the emotions:
aplomb, balance, collectedness, composure, coolness, equanimity, imperturbability, imperturbableness, nonchalance, sang-froid, self-possession, unflappability. (Slang) cool. See calm, feelingsFreedom from constraint, formality, embarrassment, or awkwardness:
casualness, ease, easiness, informality, naturalness, spontaneity, unceremoniousness, unrestraint. See restraint, tighten
verb
To place or be placed on a narrow or insecure surface:
balance, perch. See postureTo remain stationary over a place or object:
hang, hover. See hang
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