Rule reminder
The superlativo assoluto (absolute superlative) has several forms: (1) -issimo suffix, (2) molto + adjective, (3) prefix stra-/ultra-/super-/arci- + adjective, (4) reduplication (piano piano, lentamente lentamente), (5) adverb expressions (assolutamente, estremamente, particolarmente). All express the highest degree without comparison.
Il film era … (noioso — use -issimo suffix).