untiring

Nghĩa (Tiếng Anh)

1. Not able to be tired; inexhaustible.
2. Unfailing; resolute.

Từ đồng nghĩa

tireless

indefatigable

restless

persistent

busy

firm

hardworking

ceaseless

unfailing

industrious

unswerving

progressing

purposeful

purposive

relentless

steady

steely

stout-hearted

strong

stuffy

unflagging

unquiet

unshakeable

unwearied

unyielding

vigorously

with a vengeance

assiduous

not falling down

boundless

decided

dogged

fast

fixed

gritty

hard

incessant

inflexible

insatiable

Từ nguyên (Tiếng Anh)

From un- + tiring.