questionable
adj.adj. not likely to be true, honest, or useful. You use this when you have doubts about something or think it might be wrong.
adj. evoking doubt or suspicion regarding truth, morality, or wisdom. Often used to describe claims, motives, or the quality of evidence.
The results of the study are questionable because the group was too small.
The company's decision to hire the CEO's son raised several questionable ethical concerns among the board members.
While the data suggests a slight improvement in performance, the methodology used to collect those figures remains highly questionable and requires independent verification.
From question + -able.
Often follows a linking verb like 'be', 'seem', or 'remain'; frequently modified by degree adverbs like 'highly' or 'deeply'.