UNDERWEIGHT
scraggy, scraggly, boney, bony, scrawny, skinny, underweight, weedy
(adjective) being very thin; “a child with skinny freckled legs”; “a long scrawny neck”; “pale bony hands”
Source: WordNet® 3.1
Etymology
Adjective
underweight (comparative more underweight, superlative most underweight)
Of an inappropriately or unusually low weight.
Not too heavy for an intended purpose.
(finance) Being less invested in a particular area than market wisdom suggests.
Antonyms
• (of low weight): overweight
• (not too heavy): overweight
Noun
underweight (countable and uncountable, plural underweights)
(uncountable) The state or quality of being underweight.
(countable) An underweight person.
(countable, finance)
Antonyms
• (state or quality): overweight
• (underweight person): overweight
Verb
underweight (third-person singular simple present underweights, present participle underweighting, simple past and past participle underweighted)
(transitive) To underestimate the weight of.
(transitive) To give insufficient weight to (a consideration); to underestimate the importance of.
Source: Wiktionary