strained

Adjective
  1. Lacking natural ease (synset 301144984)
    "a labored style of debating"
  2. Showing signs of mental and emotional tension (synset 302415837)
    "her voice was strained as she asked the question"
  3. Lacking spontaneity;
    Not natural (synset 300074369)
    "a constrained smile"; "forced heartiness"; "a strained smile"
  4. Struggling for effect (synset 300073966)
    "agonistic poses"

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