The Collaborative International Dictionary of English v.0.48:
laboured \laboured\ adj. 1. same as labored; -- British spelling [Chiefly British] Syn: graceless, labored, strained. [WordNet 1.5]WordNet (r) 3.0 (2006):
laboured adj 1: lacking natural ease; "a labored style of debating" [syn: labored, laboured, strained] 2: requiring or showing effort; "heavy breathing"; "the subject made for labored reading" [syn: heavy, labored, laboured]