IELTS Anvil

lengthy

CEFR: B2

Continuing for a large, considerable, and often tedious amount of time, or occupying extensive pages of text.

Synonyms

extensive
drawn-out
prolix

Common Collocations

lengthy process
lengthy discussion
lengthy delay

Example Sentence

Conducting clinical trials for new cardiovascular medications is a lengthy process requiring several years of rigorous patient monitoring.

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