WordNet (r) 3.0 (2006):

stressed
    adj 1: suffering severe physical strain or distress; "he dropped
           out of the race, clearly distressed and having difficulty
           breathing" [syn: stressed, distressed]
    2: bearing a stress or accent; "an iambic foot consists of an
       unstressed syllable followed by a stressed syllable as in
       `delay'" [syn: stressed, accented] [ant: unstressed]

Moby Thesaurus II by Grady Ward, 1.0:

101 Moby Thesaurus words for "stressed":
   accented, accentuated, alveolar, apical, apico-alveolar,
   apico-dental, articulated, assimilated, back, barytone, bilabial,
   broad, cacuminal, central, cerebral, checked, close, consonant,
   consonantal, continuant, decided, dental, dissimilated, dorsal,
   emphasized, emphatic, flat, forceful, forcible, front, glide,
   glossal, glottal, guttural, hard, heavy, high, in red letters,
   intonated, italicized, labial, labiodental, labiovelar, lateral,
   lax, light, lingual, liquid, low, mid, monophthongal, muted,
   narrow, nasal, nasalized, occlusive, open, oxytone, palatal,
   palatalized, pharyngeal, pharyngealized, phonemic, phonetic,
   phonic, pitch, pitched, pointed, positive, posttonic, punctuated,
   retroflex, rounded, semivowel, soft, sonant, starred, stopped,
   strong, surd, syllabic, tense, thick, throaty, tonal, tonic,
   twangy, unaccented, underlined, underscored, unrounded, unstressed,
   velar, vocalic, vocoid, voiced, voiceless, vowel, vowellike, weak,
   wide