letter-perfect
the actor was letter-perfect in his role

nobody
nobody is perfect

obligation
perfect obligation

perfect
a perfect circle

practice
practice makes perfect

present
present perfect

reduplicated
reduplicated perfect

rhyme
perfect rhyme / rich rhyme

square
perfect square

tense
past perfect tense

tune
the engine is in perfect tune

union
they lived together in perfect union

word-perfect
que sabe muito bem o seu papel