- Bob turns out to be uncompromising
- Bob’s turn to become obstinate
- Dogged
- Immovable
- Mulish
- Obdurate
- Obstinate
- Dogged
- Incessantly repeated
- It presents problems, being tenacious
- Lingering
- Never-ceasing
- Relentless
- Tenacious
- Cantankerous
- Determined
- Dogged
- Grumpy-looking
- Relentlessly stern
- Smell
- Stolid
- Dogged
- Established firm
- full of confidence
- Resolute
- Singleminded
- of Determine
- Decided; resolute.
- Determined person
- Dogged student
- German city type who doesn’t give up
- One making attempt
- One who attempts
- One who makes an effort
- One who perseveres