Study Phase
When time runs out, a voice reads each word. You must spell it AND write one sentence using it — both are marked.
no longer useful because something newer has replaced it.
"Rapid technological advancement can render expensive equipment obsolete within a few years."
stubbornly refusing to change one's opinion or behaviour.
"Despite overwhelming evidence, the obdurate official refused to acknowledge his mistake."
gradually causing serious harm in a way that is difficult to notice initially.
"Cyberbullying can have an insidious effect on a young person's self-esteem."
having a seriously harmful effect, often gradually or subtly.
"The pernicious spread of misinformation can undermine public confidence in legitimate institutions."
exceptionally and obviously bad.
"The investigation uncovered an egregious breach of safety regulations."
careful and sensible about future consequences.
"It would be prudent to save part of one's income for unexpected emergencies."
spreading throughout an area, group or system.
"Smartphones have become pervasive in virtually every aspect of modern life."
extremely determined and unwilling to give up.
"Her tenacious pursuit of justice continued despite numerous setbacks."
to repeatedly change between different opinions or decisions.
"The committee continued to vacillate between expanding the programme and abandoning it altogether."
unwilling to compromise or change one's position.
"Negotiations collapsed because both parties remained intransigent despite repeated attempts at mediation."