Batch 1 vocabulary: 20 words with meanings

The 20 words in batch 1, each with a plain-English meaning. Tap a word for its picture card, example sentence, synonyms, antonyms and memory tip.

Accentuate v.to make more noticeable or prominent; to emphasize
Amorphous adj.without a clearly defined shape, form, or structure
Arduous adj.requiring great effort and persistence; difficult and tiring, especially over a long period
Buttress v.to support or strengthen, especially an argument or claim
Conjecture n.an opinion or conclusion formed from incomplete information; a guess
Constrain v.to restrict or limit; to force within certain bounds
Corroborate v.to confirm or give support to a statement, theory, or finding
Counterfactual adj.relating to what did not happen but might have happened under different conditions
Dogmatic adj.stating opinions as undeniably true without considering evidence or other views
Eclipse v.to surpass or overshadow someone or something in importance or success
Efficacy n.the ability to produce the intended or desired result
Inconsequential adj.not important or significant; having little or no effect
Insuperable adj.impossible to overcome or deal with
Manifest v.to show or display clearly; to make evident
Mitigate v.to make something bad less severe, serious, or painful
Prevail v.to prove more powerful or win out; also, to be widespread or current
Rectify v.to put right or correct something that is wrong
Repudiate v.to refuse to accept or be associated with; to reject firmly
Spurious adj.false or fake, though made to look genuine; based on faulty reasoning
Unscrupulous adj.having or showing no moral principles; dishonest or unfair