talks big

Makes grand claims

To talk big is to boast or make exaggerated claims about one's abilities, plans, or accomplishments—often without the substance to back them up.

The phrase implies skepticism: someone who talks big may not deliver.

He talks big about his connections, but I've never seen him actually help anyone.

Related

bravado · puff · puffed up · hubris · crow · blowhard · gas bag · arrogance · overconfidence · strut · empty promises · windbag · chest thumping · self-aggrandizement · self-importance · grandiosity · cockiness · bluster

Opposites
self-presentation and boastfulness

talks bigself-effacing

Downplaying one's own importance

modest · humble · understates · self-deprecating · unassuming

action vs. rhetoric

talks bigwalks the walk

Acts on stated beliefs

delivers · puts up · follows through · man of few words · strong silent type

Family

talk, talks, talked, talking, talker, talkers, big, bigger, biggest

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G