can't help but

Compelled to do

Can't help but introduces something unavoidable or irresistible—an action or feeling that happens despite one's intentions: I can't help but wonder what might have been, You can't help but laugh at his jokes.

The phrase is slightly redundant (can't help and can't but mean the same thing), but it's thoroughly established in standard English.

Interchangeable with can't help followed by a gerund: I can't help wondering.

Related

no choice but · destined · inevitable · drawn · drawn to · obliged · overwhelmed · inescapable · haunted · instinctively · hard wired · unpreventable · bound · stuck · constrained · preoccupied · fixated · consumed

Opposites
volition and restraint

can't help butresist

Oppose or refuse compliance

hold back · keep from · avoid · help oneself · bite one's tongue

volition and control

can't help butdeliberately

Done with intention

intentionally · consciously · voluntarily · by choice · on purpose

Family

can't, cannot, help, helps, helped, helping, helper, helpers, helpful

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G