hold back
• hesitate to act or speak.
• "he held back, remembering the mistake he had made before"
Opposite:
carry on,
• prevent or restrict the progress or development of someone or something.
• "my lack of experience held me back a bit"
Similar:
hinder,
hamper,
inhibit,
impede,
obstruct,
check,
curb,
block,
thwart,
balk,
hamstring,
restrain,
frustrate,
retard,
delay,
prevent from making progress,
stand in someone's way,
stymie,
bork,
trammel,