least;  lowest;  worst;  awful;  horrible;  at the very least
 fall;  decline;  lowering;  deterioration;  degradation
 low tone;  bass;  low voice
 low grade;  vulgar;  low class;  cheap;  low level
 high and low;  rise and fall
 lower grades of primary school (first, second, and sometimes third grades)
 low intelligence;  low IQ;  feeble-mindedness;  unintelligent person;  person with a low IQ
 depression;  lowlands;  low ground;  bottom land;  plain
 decrease;  reduction;  fall;  depreciation;  mitigation
 low (atmospheric) pressure;  low-pressure system;  depression;  bad temper;  foul mood;  tense situation
 low-rise (architecture);  low-level;  low-class
 low intelligence;  low IQ;  feeble-mindedness;  unintelligent person;  person with a low IQ
 low quality;  poor quality
 low-level;  trivial;  coarse;  low-dimension
 low grade;  inferiority;  coarseness;  vulgarity
 low rating;  bad reputation
 inactive;  slow;  sluggish;  slack;  low tone;  undertone
 low blood sugar;  hypoglycemia
 very low (deep, cold, etc.);  ultra-;  infra-;  hyper-
 low orbit;  low earth orbit;  LEO
 young (e.g. young children);  of few years
 low pressure;  low voltage
 small amount (of money);  small sum
 low-spec;  having nothing to compete with (on the dating scene);  having nothing going for one;  being a lost cause
 low-level education;  inferior education
 low degree;  low grade;  low class
 low-lying region;  lowland;  basal zone
 undernutrition;  undernourishment;  malnutrition;  poor nutrition
 hypoxic encephalopathy (brain damage from lack of oxygen)
 low dose (drug, vaccine, etc.);  low dosage
 hum;  singing in a low voice
 low rent;  peppercorn rent
 going about immersed or absorbed;  pacing back and forth meditatively;  being deep in thought
 low floor (platform, vehicle, etc.)
 low dose (e.g. radiation)
 low tar (e.g. of cigarettes)
 low class;  low in social standing;  low level;  base (e.g. of support);  foundation;  basis
 low-density lipoprotein;  LDL
 whispering;  murmuring;  talking in a low voice
 low-density lipoprotein;  LDL
 ideal husband who is not overbearing, is not dependent on his wife, has a stable job and does not spend a lot of money
 ideal husband who is not overbearing, is not dependent on his wife, has a stable job and does not spend a lot of money
 low-carbohydrate;  low-carb
 low-density lipoprotein;  LDL
 Least Concern (conservation status);  LC
 low nicotine (e.g. of cigarettes)
 low voltage mobile (processor)
 hypoosmolality;  hyposmosis
 cerebrospinal fluid hypovolemia;  CSF hypovolemia;  intracranial hypotension syndrome