inconsistent; half-hearted; not thorough
Describes actions, policies, or attitudes that are not carried through consistently or lack thoroughness. Often used critically.
His explanation was inconsistent, and I couldn't really understand what the problem was.
Half-hearted measures won't prevent a recurrence.
Also means 'halfway' or 'incomplete', but is more colloquial and often used for things left unfinished, while 不徹底 emphasizes lack of consistency or thoroughness in principle.
Formed from 不 (negation prefix) + 徹底 (thoroughness, consistency).