reassuring
adjective
[ riːəˈʃɔːrɪŋ ]
• serving or intended to remove someone's doubts or fears.
• "Gina gave her a reassuring smile"
reassure
verb
• say or do something to remove the doubts or fears of (someone).
• "he understood her feelings and tried to reassure her"
Similar:
put/set someone's mind at rest,
dispel someone's fears,
raise someone's spirits,
put someone at ease,
encourage,
hearten,
buoy up,
cheer up,
comfort,
soothe,
inspirit,
