56 entries under penetrating topic. ×

18
earnest(adjective, strong, enthusiastic, powerful, deep)
15
energetic(adjective, work, strong, keen, intense)
11
zealous(adjective, strong, keen, intense, energetic)
7
eager(adjective, strong, keen, intense, energetic)
6
hard(adjective, strong, difficult, powerful, tedious)
6
strong(adjective, great, sharp, harsh, powerful)
5
ardent(adjective, strong, passionate, powerful, deep)
5
fervent(adjective, strong, passionate, powerful, deep)
4
concentrated(adjective, strong, great, complete, sharp)
4
keen(adjective, strong, intense, energetic, powerful)
3
severe(adjective, strong, powerful, fastidious)
3
sharp(adjective, strong, powerful, attentive)
2
vehement(adjective, strong, passionate, powerful, deep)
1
burning(strong, powerful, active, busy, occupied)
1
deep(adjective, strong, great, powerful, forceful)
1
fervid(adjective, strong, passionate, powerful, deep)
1
forceful(strong, powerful)
1
forcible(strong, powerful)
1
passionate(adjective, strong, powerful, deep, ardent)
1
supreme(strong, powerful)
<123>
11 years ago|21k views|share |citing 
APASmart Define. (2015). diligent thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/diligent/thesaurus/synonyms
ChicagoSmart Define. 2015. "diligent thesaurus" https://smartdefine.org/diligent/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, diligent thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/diligent/thesaurus/synonyms>.
MLASmart Define. "diligent thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/diligent/thesaurus/synonyms>