粘り強い

プログレッシブ和英中辞典(第4版)

ねばりづよい【粘り強い】

persevering; tenacious

粘り強い男
a tenacious man／a man of great tenacity

彼には粘り強さがない
He lacks tenacity [perseverance/《米口》 stick-to-itiveness].

最後には彼の粘り強さが物を言った
In the end his stamina brought him success.

社長の職を引き受けるよう粘り強く彼を説得した
We urged him persistently [patiently] to accept the presidency.／《口》 We kept after him (tirelessly) to accept the presidency.

粘り強く研究を続けた
「He persevered in [He stuck doggedly to] his research.

出典　小学館「プログレッシブ和英中辞典(第4版)」