Synonyms for Labored (same or very similar meaning)
WordNet sense 1 (lacking natural ease):
strained, laboured
WordNet sense 2 (lacking grace or skill in manner or movement or performance):
awkward
WordNet sense 3 (requiring or showing effort):
heavy
WordNet sense 4 (requiring great physical effort):
effortful
From the ODE community, based on WordNet
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