111. causal / caustic
caustic: A caustic remark is extremely critical, cruel, or bitter. (FORMAL)
112. slight / blight / plight / delight
113. fret / flat / flag
fret: If you fret about something, you worry about it.
114. daunt / haunt / vaunt / flaunt / saunter / gaunt
daunt: If something daunts you, it makes you feel slightly afraid or worried about dealing with it.
vaunt: If you describe something as vaunted or much vaunted, you mean
that people praise it more than it deserves. (FORMAL)
flaunt: If you say that someone flaunts their possessions, abilities, or qualities, you mean that they display them in a very obvious way, especially in order to try to obtain other people's admiration.
saunter: If you saunter somewhere, you walk there in a slow, casual way.
gaunt: If someone looks gaunt, they look very thin, usually because they have been very ill or worried.
115. morbid / moribund / mordant
morbid: If you describe a person or their interest in something as morbid, you mean that they are very interested in unpleasant things, especially death, and you think this is strange.
moribund: If you describe something as moribund, you mean that it is in a very bad condition. (FORMAL)
mordant: Mordant humor is very critical and often mocks someone or something. (FORMAL)
116. tepid / torpid / turbid / turgid / timid / intrepid /
tepid: If you describe something such as a feeling or reaction as tepid, you mean that it lacks enthusiasm.
torpid: If you are torpid, you are mentally or physically inactive, especially because you are feeling lazy or sleepy. (FORMAL) (= lethargic)
turgid: If you describe something such as a piece of writing or a film as turgid, you think it is boring and difficult to understand.
timid: Timid people are shy, nervous, and have no courage or confidence in themselves.
intrepid: An intrepid person acts in a brave way.
117. proliferate / prolific / prolix / profligate
proliferate: If things proliferate, they increase in number very quickly. (FORMAL)
prolific: A prolific writer, artist, or composer produces a large number of works.
prolix: using too many words.
profligate: Someone who is profligate spends too much money or uses too much of something. (FORMAL)
118. doubtable / redoubtable
redoubtable: If you describe someone as redoubtable, you respect them because they have a very strong character, even though you are slightly afraid of them.
119. impair / repair
120. obtrude / obtuse
obtrude: When something obtrudes or when you obtrude it, it becomes noticeable in an undesirable way. (LITERARY)
obtuse: Someone who is obtuse has difficulty understanding things. (FORMAL)