hesitate, v. [doubt], [vacillate], [falter], dubitate, [waver], [scruple], demur, [deliberate].
hesitation, n. [indecision], [doubt], [vacillation], [reluctance], [wavering].
hidden, a. [covert], [latent], [concealed]; [recondite], esoteric, [abstruse], unrevealed.
hide, v. [veil], [cloak], conceal, dissemble, cache, [secrete], [mask]; [skulk], lurk.
hidebound, a. untractable, [bigoted], [obstinate], [uncompromising].
hideous, a. [horrible], grim, ogreish, grisly, [repulsive], [ugly], [ghastly], [shocking].
hiding, n. [concealment], [secretion].
high, a. [lofty], [tall], elevated, towering.
high and dry. [aground], [beached], [stranded].
high and mighty. (Colloq.) [arrogant], [overbearing], [domineering], [lordly].