Reverse Dictionary: STRENGTH 

ADJECTIVES
1275 ► WIGHT strong, robust, mighty; exercising strength, energetic → arch., Sc., & Eng. dial.
1531 ► VALIANT marked or characterized by the use of strength → obs.
1646 ► VIRIPOTENT possessed of strength and energy → obs.
1651 ► VALID of persons: sound or robust in body; possessed of health and strength
1742 ► MAUGHTLESS feeble, wanting bodily strength → Sc.
1752 ► FORTITUDINOUS having fortitude; endowed with courage or moral strength; capable of endurance
19C.. ► FRESH AS A NEW-BORN TURD full of health, strength, and activity → sl.
1866 ► FAUCHINLESS weak, without strength or energy → Sc.
1898 ► ANAEMIC lacking in vigour, strength, or spirit → colloq.
1963 ► ARMSTRONG done by hand, necessitating arm strength rather than mechanical leverage → Can. sl.

NOUNS
1200 ► AFEL strength, physical force → obs.
1300 ► RANK rankness, strength → obs.
1412 ► TACK hold; holding quality; adherence, endurance, stability, strength, substance, solidity → obs. exc. Eng. dial.
1420 ► PUISSANCE power, strength, force, might, influence → chiefly arch. & poetic
1432 ► A LABOUR OF HERCULES a task requiring enormous strength
1560 ► SINEW strength, energy, force; usually in the plural
1574 ► VALURE physical strength or ability; power, might → obs.
1578 ► VALIDITY the state of being physically strong or sound; robustness; strength → obs.
1596 ► FASTNESS security from invasion, difficulty of access; safety, strength → obs.
1611 ► NERVOSITY strength → obs.
1617 ► HERCULEAN LABOUR a task requiring enormous strength
1623 ► VALENCY might, power, strength → obs.
1731 ► DOUGHT power, strength, ability → Sc., obs.
1742 ► FARRACH → FEEROCH → FEIROCH strength, substance; force, ability, energy → Sc.
1773 ► MAUGHT might, strength, ability → Sc.
1808 ► TEBBITS → TIBBITS physical sensation, feelings; energy, strength → Sc.
1836 ► VENOM fullness, strength → Eng. dial. obs.
1856 ► BANT vigour, strength, endurance, ‘go’ → Eng. dial.
1872 ► HANDY-MIGHT strength of hand, main force → Sc. 
1878 ► HEART O’ GRACE courage, strength → Eng. dial. 
1890 ► BALLS virile courage; virility; guts; strength of character; energy, spirit → US sl.
1898 ► ABLEMENT bodily strength → Eng. dial. (Bk.)
1898 ► FAIL decline in strength → Sc. obs.
1900 ► DAZZITY the performance of a challenging action of strength, skill, or risk by boys → Eng. dial. (Bk.)
1905 ► VIRTUE strength, life, energy → Eng. dial. (Bk.)
1905 ► YATTLE an endeavour; strength, force of mind → Sc. obs. (Bk.)
1911 ► BINN strength; excellence → Sc. (Bk.)
1912 ► ARMSTRONG PATENT any of various heavy devices that must be operated by hand; also, muscular strength used for such work → Amer. sl.
1914 ► BANDY a stunt or feat; feats of agility or strength → Amer. dial.
1930 ► MOXEY → MOXIE → MOXY energy, initiative; strength, know-how; courage, nerve → Amer. dial.
1959 ► HAIR courage, masculine prowess, virile strength → US students’ sl.
1965 ► POKE power, esp. in a car or other vehicle; strength, vigour → UK sl.
1987 ► ARMSTRONG METHOD the technique of using hand and arm strength to get a job done → Can. sl.

NOUNS, PERSON
1500 ► TIGER a person of fierce, cruel, rapacious, or bloodthirsty disposition; also, a person of very great activity, strength, or courage
1580 ► GOGMAGOG a giant; a man of immense stature and strength; a big strong person → obs.
1702 ► MORTAL a person of ordinary strength, skill, etc.; often in implied contrast with others of higher status or ability; frequently used with a modifying word, as ‘mere mortal’
1839 ► MARY AMBREE a woman of strength and spirit
1926 ► MOOSE CAT anyone possessing great ability, strength, etc.; an extraordinary person → Amer. logging usage

VERBS
1533 ► ROBORATE to give strength or support to; to invigorate; to fortify → obs.
1588 ► GATHER UP ONE’S CRUMBS to ‘pick up’ or recover one’s strength or health; to improve in condition → obs. exc. Eng. dial.
1647 ► IMBECILITATE to make imbecile, weak, or feeble; to enfeeble; to deprive of strength → obs.
1690 ► CANT to become ‘cant’ or well; to recover strength; to mend → Eng. dial. obs.
1715 ► SINK to reduce, weaken, or exhaust the strength of a person
1882 ► PUT ONE’S BACK INTO to use all one’s efforts or strength in a particular endeavour 1882
1968 ► RAISE UP FUSS to gather strength → Amer. dial.