incomplete combustion; imperfect combustion; being off one's game; not doing one's best; being unable to use all of one's strength
(Goedel's) incompleteness theorem
incomplete metamorphosis; hemimetabolism
incomplete intransitive verb
defective performance; imperfect performance
imperfect fungus; deuteromycete
Deuteromycota; fungi imperfecti; mitosporic fungi; anamorphic fungi