LABORIOUS, LABORIOUSLY, LABORIOUSNESS
ADJECTIVES
1380 ► PAINFUL performed with labour, care, and attention; diligent, assiduous, laborious, careful → arch.
1386 ► LABOROUS laborious → obs.
1530 ► TOILOUS full of toil, toilsome, laborious → obs.
1538 ► OPEROUS made or done with much labour or effort; laborious, industrious, busy; painstaking, tedious; toilsome; elaborate → obs.
1618 ► SWEATFUL full of sweat; toilsome, laborious, distressing, oppressive → chiefly poetic usage
1656 ► MOLIMINOUS done with great effort or endeavour, laborious → obs.
1670 ► OPEROSE of a person: laborious; industrious, busy
1683 ► OPEROSE made or done with much labour; laborious; tedious; toilsome; elaborate
1727 ► LABORIOSE laborious, painstaking → obs.
1889 ► LABOURSOME laborious; fatiguing → Eng. dial.
..20C ► BULL-DRAGGING tedious, laborious → Irish sl.
1902 ► LABOUROUS laborious → Eng. dial. (Bk.)
ADVERBS
1555 ► PAINFULLY with great pains, painstakingly, laboriously, with care an effort → arch.
1668 ► OPEROSELY laboriously, busily; elaborately
1668 ► OPEROUSLY laboriously, busily; elaborately → obs.
1701 ► HEAVY with laborious movement; slowly, sluggishly; laboriously
NOUNS
1530 ► LABOROUSNESS laboriousness → obs.
1531 ► PAINFULNESS the quality of taking pains; laboriousness, careful industry, painstaking → arch.
1623 ► OPEROSITY laboriousness, painstaking endeavour
1656 ► LABORIOSITY painfulness, laboriousness
1656 ► LABOROSITY laboriousness → obs.
1664 ► OPEROSENESS laboriousness, elaborateness
1858 ► LABOURHOOD laborious condition; laboriousness
1947 ► DAD of any laborious activity: a heavy task, a weary journey → Sc.
NOUNS, PERSON
1549 ► PAIN TAKER a person who takes pains; a painstaking or laborious person → obs.
1595 ► PAINSTAKER a person who takes pains; one careful and faithful in all work; a painstaking person; a labourer; a laborious person
..19C ► NABBLE a narrow-minded, greedy, laborious person; a churlish person → Sc.
1824 ► NABLE a narrow-minded, greedy, laborious person → Sc.
VERBS
1904 ► SCART to lead a laborious, industrious life → Sc. (Bk.)
Lexicophilia 