Synonyms of intensively

2 Syllables
wholly, quite, fully
3 Syllables
utterly, totally, finally, thoroughly, perfectly, sweepingly, solidly
4 Syllables
altogether, unabridged, untiringly, assiduously, painstakingly, competently
5 Syllables
conclusively, undividedly, absolutely, extensively, exclusively, meticulously, effectively, ultimately, exhaustively, unanimously
6 Syllables
comprehensively, unconditionally